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Finding the Third Proportional to 12,432 and 16,355

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Solution

The third proportional to 12,432 and 16,355 is: 21,515.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432 : 16,355 = 16,355 : x
  2. Step 2: Convert to fraction form
    12,432/16,355 = 16,355/x
  3. Step 3: Cross multiply
    12,432x = 16,355 × 16,355
  4. Step 4: Simplify right side
    12,432x = 267,486,025
  5. Step 5: Solve for x
    x = 267,486,025/12,432
  6. Step 6: Final answer
    x = 21,515.93

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.