Respuesta :

Answer:

x = 12

Step-by-step explanation:

Assuming you reqire the value of x that makes

4 : x equivalent to 5 : 15

Divide 5 by 4, that is 5 ÷ 4 = 1.25

Thus 1.25x = 15 ( divide both sides by 1.25 )

x = 12

Hence

4 : 12 = 5 : 15