Thread: Right Triangle Problem... Finding X

How do you find X (The steps) .... any help please? Trying to help my nephew.

By AAA similarity, triangles ABE and ACD are similar, with a 1:4 ratio (since BE = 3, CD = 12).

Therefore, AE:ED = X:X+60 = 1:4. So 4X = X+60, X = 20.

Thank you very much.