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Finding the Fourth Proportional to 21,902.43, 32,837.43 and 8,744.79

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Solution

The fourth proportional to 21,902.43, 32,837.43 and 8,744.79 is: 13,110.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.43 : 32,837.43 = 8,744.79 : x
  2. Step 2: Convert to fraction form
    21,902.43/32,837.43 = 8,744.79/x
  3. Step 3: Cross multiply
    21,902.43x = 32,837.43 × 8,744.79
  4. Step 4: Simplify right side
    21,902.43x = 287,156,429.49
  5. Step 5: Solve for x
    x = 287,156,429.49/21,902.43
  6. Step 6: Final answer
    x = 13,110.71

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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.