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Finding the Fourth Proportional to 22,372.47, 30,874.68 and 12,300.39

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Solution

The fourth proportional to 22,372.47, 30,874.68 and 12,300.39 is: 16,974.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,372.47 : 30,874.68 = 12,300.39 : x
  2. Step 2: Convert to fraction form
    22,372.47/30,874.68 = 12,300.39/x
  3. Step 3: Cross multiply
    22,372.47x = 30,874.68 × 12,300.39
  4. Step 4: Simplify right side
    22,372.47x = 379,770,605.13
  5. Step 5: Solve for x
    x = 379,770,605.13/22,372.47
  6. Step 6: Final answer
    x = 16,974.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.