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Finding the Fourth Proportional to 22,221.76, 33,331.76 and 12,354.80

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Solution

The fourth proportional to 22,221.76, 33,331.76 and 12,354.80 is: 18,531.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,221.76 : 33,331.76 = 12,354.80 : x
  2. Step 2: Convert to fraction form
    22,221.76/33,331.76 = 12,354.80/x
  3. Step 3: Cross multiply
    22,221.76x = 33,331.76 × 12,354.80
  4. Step 4: Simplify right side
    22,221.76x = 411,807,228.45
  5. Step 5: Solve for x
    x = 411,807,228.45/22,221.76
  6. Step 6: Final answer
    x = 18,531.71

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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.