Respuesta :

atulikihi373

I got 13.5.

The first triangle is counting in 3's.

The second one is adding 4.5. I subtracted 22.5-18.

That is how I got my answer.

alleah77

Answer:

10.5

Step-by-step explanation:

A proportion shows data in relation to each other.

12:18 as 9:__ (read 12 is to 18 as __ is to 9)

15: 22.5 as 12:18 (read 15 is to 22.5 as 12 is to 18)

With each proportion the difference is 1.5, so if you add 1.5 to 9, you get 10.5.

So,

9:10.5 as 12:18 as 15:22.5 (read 9 is to 10.5 as 12 is to 18 as 15 is to 22.5)

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