I have almost the same audiogram as you. -15 dB at 4000 Hz, which is the lowest dip in the standard audiogram. left ear is at the 0 dB treshold. In the extended audiogram things are far worse in that I don't hear much over 12 kHz in my right ear, even though when tested they found I could hear 14 kHz at -55 dB. (This went from inaudible at -50 dB to almost painfully loud and shrill at -55 dB-hence I stopped the testing but likely 16 kHz is worse.) Because my tinnitus seems to center around 12 kHz almost nothing can mask it, and it's horrible.I have a hearing profile where the left ear hears slightly worse than the right ear. However, the left ear is still within normal limits, e.g. it is -15dB at 2000 Hz, 4000 Hz and 6000 Hz. The right ear is more like -5dB at these frequencies.
Is there any chance an audiologist would suggest a hearing aid in my case, where hearing is worse in one ear but is still technically normal? FWIW it's only the "worse ear" where the tinnitus really bothers me; the other ear has slight tinnitus but it's not an issue at all.
To answer your question: I was told I would not benefit from hearing aids. My speech-in noise tests came back just as well in my right ear as my left. Both ears were normal. I do however struggle to understand speech when multiple people are talking, and frankly these environments make me uncomfortable. What age are you if you don't mind me asking?