Search range from data that's been input

I need some help and I don't even know if this is possible or whether I should lay it all out differently, but I'm trying to get the following to happen. In the attached image, I want to input an age in C9, and a fat % in C10, then it searches B1:F1 to find the age (22) then in this example it would search D2:D6 to find the corresponding value in D4 (23.5%). Then it would go to column G on the same row, so G4 to return the value 30 in C13.
Attachment 540805

Hi and welcome to the forum

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