i will give you brainliest whoever answers correct first!!

Answer:
IJ = 12.8
Step-by-step explanation:
Since you are missing 1 side, set up a proportion 8 is to 3.2 as 32 is to x, so
[tex]\frac{8}{3.2} =\frac{32}{x}[/tex] so solve for x by cross multiplying 8x = 102.4, so x = 12.8