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Finding the Fourth Proportional to 13,656.87, 20,472.53 and 6,253.88

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Solution

The fourth proportional to 13,656.87, 20,472.53 and 6,253.88 is: 9,374.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.87 : 20,472.53 = 6,253.88 : x
  2. Step 2: Convert to fraction form
    13,656.87/20,472.53 = 6,253.88/x
  3. Step 3: Cross multiply
    13,656.87x = 20,472.53 × 6,253.88
  4. Step 4: Simplify right side
    13,656.87x = 128,032,612.28
  5. Step 5: Solve for x
    x = 128,032,612.28/13,656.87
  6. Step 6: Final answer
    x = 9,374.96

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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.