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Finding the Fourth Proportional to 22,331.60, 33,432.60 and 21,165.20

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Solution

The fourth proportional to 22,331.60, 33,432.60 and 21,165.20 is: 31,686.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,331.60 : 33,432.60 = 21,165.20 : x
  2. Step 2: Convert to fraction form
    22,331.60/33,432.60 = 21,165.20/x
  3. Step 3: Cross multiply
    22,331.60x = 33,432.60 × 21,165.20
  4. Step 4: Simplify right side
    22,331.60x = 707,607,665.52
  5. Step 5: Solve for x
    x = 707,607,665.52/22,331.60
  6. Step 6: Final answer
    x = 31,686.38

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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.