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Finding the Fourth Proportional to 22,101.28, 33,152.28 and 20,979.76

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Solution

The fourth proportional to 22,101.28, 33,152.28 and 20,979.76 is: 31,469.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,101.28 : 33,152.28 = 20,979.76 : x
  2. Step 2: Convert to fraction form
    22,101.28/33,152.28 = 20,979.76/x
  3. Step 3: Cross multiply
    22,101.28x = 33,152.28 × 20,979.76
  4. Step 4: Simplify right side
    22,101.28x = 695,526,877.85
  5. Step 5: Solve for x
    x = 695,526,877.85/22,101.28
  6. Step 6: Final answer
    x = 31,469.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.