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Finding the Fourth Proportional to 39,996, 59,996.96 and 15,372

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Solution

The fourth proportional to 39,996, 59,996.96 and 15,372 is: 23,059.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,996 : 59,996.96 = 15,372 : x
  2. Step 2: Convert to fraction form
    39,996/59,996.96 = 15,372/x
  3. Step 3: Cross multiply
    39,996x = 59,996.96 × 15,372
  4. Step 4: Simplify right side
    39,996x = 922,273,269.12
  5. Step 5: Solve for x
    x = 922,273,269.12/39,996
  6. Step 6: Final answer
    x = 23,059.14

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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.