Question

The triangles are similar. If QR = 9, QP = 6, and TU = 19, find TS. Round to the nearest tenth.

Answer 1

9 : 19 = 6 : x
9 . x = 19 . 6
9x = 114
x = 12,6

Answer 2

Answer=12.6

QR=9
QP=6
TU=19
TS=?

The triangles are similar, so the following equation can be made

   9         6
____=____
  19        x        

Cross multiply
9x=114
divide both sides by 9
x=12.6 (with the 6 repeating) or 12 2/3

TS=12.6