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Finding the Third Proportional to 8,330 and 12,957

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Solution

The third proportional to 8,330 and 12,957 is: 20,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330 : 12,957 = 12,957 : x
  2. Step 2: Convert to fraction form
    8,330/12,957 = 12,957/x
  3. Step 3: Cross multiply
    8,330x = 12,957 × 12,957
  4. Step 4: Simplify right side
    8,330x = 167,883,849
  5. Step 5: Solve for x
    x = 167,883,849/8,330
  6. Step 6: Final answer
    x = 20,154.12

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.