Home / 22,221.28-30,665.04-12,149.76

Finding the Fourth Proportional to 22,221.28, 30,665.04 and 12,149.76

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Solution

The fourth proportional to 22,221.28, 30,665.04 and 12,149.76 is: 16,766.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,221.28 : 30,665.04 = 12,149.76 : x
  2. Step 2: Convert to fraction form
    22,221.28/30,665.04 = 12,149.76/x
  3. Step 3: Cross multiply
    22,221.28x = 30,665.04 × 12,149.76
  4. Step 4: Simplify right side
    22,221.28x = 372,572,876.39
  5. Step 5: Solve for x
    x = 372,572,876.39/22,221.28
  6. Step 6: Final answer
    x = 16,766.49

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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.