### Home > GC > Chapter 12 > Lesson 12.2.2 > Problem12-66

12-66.

In the diagram at right, $ABCD \sim DCFE$. Solve for $x$ and $y$. Show all work.

Set up proportions to find these lengths.

$\frac{x}{12}=\frac{10}{15}$

$x = 8$