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Finding the Fourth Proportional to 22,115.52, 30,519.40 and 12,179.52

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Solution

The fourth proportional to 22,115.52, 30,519.40 and 12,179.52 is: 16,807.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.52 : 30,519.40 = 12,179.52 : x
  2. Step 2: Convert to fraction form
    22,115.52/30,519.40 = 12,179.52/x
  3. Step 3: Cross multiply
    22,115.52x = 30,519.40 × 12,179.52
  4. Step 4: Simplify right side
    22,115.52x = 371,711,642.69
  5. Step 5: Solve for x
    x = 371,711,642.69/22,115.52
  6. Step 6: Final answer
    x = 16,807.73

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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.