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Finding the Fourth Proportional to 22,151.20, 33,226.80 and 20,207.20

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Solution

The fourth proportional to 22,151.20, 33,226.80 and 20,207.20 is: 30,310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,151.20 : 33,226.80 = 20,207.20 : x
  2. Step 2: Convert to fraction form
    22,151.20/33,226.80 = 20,207.20/x
  3. Step 3: Cross multiply
    22,151.20x = 33,226.80 × 20,207.20
  4. Step 4: Simplify right side
    22,151.20x = 671,420,592.96
  5. Step 5: Solve for x
    x = 671,420,592.96/22,151.20
  6. Step 6: Final answer
    x = 30,310.80

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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.