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Finding the Fourth Proportional to 39,956, 59,943.72 and 13,301.92

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Solution

The fourth proportional to 39,956, 59,943.72 and 13,301.92 is: 19,956.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,956 : 59,943.72 = 13,301.92 : x
  2. Step 2: Convert to fraction form
    39,956/59,943.72 = 13,301.92/x
  3. Step 3: Cross multiply
    39,956x = 59,943.72 × 13,301.92
  4. Step 4: Simplify right side
    39,956x = 797,366,567.94
  5. Step 5: Solve for x
    x = 797,366,567.94/39,956
  6. Step 6: Final answer
    x = 19,956.12

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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.