Question

Solve the proportion for the missing number.
4/12 = 6/n

Answer 1

What about 8/15 = 12/a

Answer 2

To solve the proportion \( \frac{4}{12} = \frac{6}{n} \), we can use cross multiplication.

Cross multiplying gives us:
\[
4n = 12 \times 6
\]

Calculating \( 12 \times 6 \):
\[
12 \times 6 = 72
\]

So we have:
\[
4n = 72
\]

To solve for \( n \), divide both sides by 4:
\[
n = \frac{72}{4} = 18
\]

Thus, the missing number \( n \) is:
\[
\boxed{18}
\]

Answer 3

To solve the proportion \( \frac{8}{15} = \frac{12}{a} \), we can use cross multiplication.

Cross multiplying gives us:
\[
8a = 15 \times 12
\]

Calculating \( 15 \times 12 \):
\[
15 \times 12 = 180
\]

Now we have:
\[
8a = 180
\]

To solve for \( a \), divide both sides by 8:
\[
a = \frac{180}{8}
\]

Simplifying \( \frac{180}{8} \):
\[
a = 22.5
\]

Thus, the missing number \( a \) is:
\[
\boxed{22.5}
\]