Home / 16,291.38-22,480.21-9,121.70

Finding the Fourth Proportional to 16,291.38, 22,480.21 and 9,121.70

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Solution

The fourth proportional to 16,291.38, 22,480.21 and 9,121.70 is: 12,586.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,291.38 : 22,480.21 = 9,121.70 : x
  2. Step 2: Convert to fraction form
    16,291.38/22,480.21 = 9,121.70/x
  3. Step 3: Cross multiply
    16,291.38x = 22,480.21 × 9,121.70
  4. Step 4: Simplify right side
    16,291.38x = 205,057,731.56
  5. Step 5: Solve for x
    x = 205,057,731.56/16,291.38
  6. Step 6: Final answer
    x = 12,586.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.