Home / 15-22

Finding the Third Proportional to 15 and 22

Calculator

Solution

The third proportional to 15 and 22 is: 32.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15 : 22 = 22 : x
  2. Step 2: Convert to fraction form
    15/22 = 22/x
  3. Step 3: Cross multiply
    15x = 22 × 22
  4. Step 4: Simplify right side
    15x = 484
  5. Step 5: Solve for x
    x = 484/15
  6. Step 6: Final answer
    x = 32.27

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.