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Finding the Third Proportional to 13,376 and 20,472

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Solution

The third proportional to 13,376 and 20,472 is: 31,332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376 : 20,472 = 20,472 : x
  2. Step 2: Convert to fraction form
    13,376/20,472 = 20,472/x
  3. Step 3: Cross multiply
    13,376x = 20,472 × 20,472
  4. Step 4: Simplify right side
    13,376x = 419,102,784
  5. Step 5: Solve for x
    x = 419,102,784/13,376
  6. Step 6: Final answer
    x = 31,332.44

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.