Answer :

To solve the given question [tex]\(\frac{9}{11} = \frac{?}{22}\)[/tex], we need to determine the number that makes the equation true.

1. We start by setting up the proportional equation:
[tex]\[ \frac{9}{11} = \frac{x}{22} \][/tex]

2. To isolate [tex]\(x\)[/tex], we can use cross multiplication:
[tex]\[ 9 \times 22 = 11 \times x \][/tex]

3. Evaluate the multiplication on the left-hand side:
[tex]\[ 9 \times 22 = 198 \][/tex]

4. Now, we have:
[tex]\[ 198 = 11x \][/tex]

5. Next, we solve for [tex]\(x\)[/tex] by dividing both sides by 11:
[tex]\[ x = \frac{198}{11} \][/tex]

6. Perform the division:
[tex]\[ x = 18 \][/tex]

Thus, the solution to [tex]\(\frac{9}{11} = \frac{x}{22}\)[/tex] is [tex]\(x = 18\)[/tex].

The best answer is:
D. 18