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Finding the Third Proportional to 8,281 and 12,670

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Solution

The third proportional to 8,281 and 12,670 is: 19,385.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281 : 12,670 = 12,670 : x
  2. Step 2: Convert to fraction form
    8,281/12,670 = 12,670/x
  3. Step 3: Cross multiply
    8,281x = 12,670 × 12,670
  4. Step 4: Simplify right side
    8,281x = 160,528,900
  5. Step 5: Solve for x
    x = 160,528,900/8,281
  6. Step 6: Final answer
    x = 19,385.21

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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.