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Finding the Fourth Proportional to 22,520.08, 33,780.82 and 7,728.80

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Solution

The fourth proportional to 22,520.08, 33,780.82 and 7,728.80 is: 11,593.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,520.08 : 33,780.82 = 7,728.80 : x
  2. Step 2: Convert to fraction form
    22,520.08/33,780.82 = 7,728.80/x
  3. Step 3: Cross multiply
    22,520.08x = 33,780.82 × 7,728.80
  4. Step 4: Simplify right side
    22,520.08x = 261,085,201.62
  5. Step 5: Solve for x
    x = 261,085,201.62/22,520.08
  6. Step 6: Final answer
    x = 11,593.44

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Similar ratio
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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.