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Finding the Third Proportional to 17,817 and 38,670

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Solution

The third proportional to 17,817 and 38,670 is: 83,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,817 : 38,670 = 38,670 : x
  2. Step 2: Convert to fraction form
    17,817/38,670 = 38,670/x
  3. Step 3: Cross multiply
    17,817x = 38,670 × 38,670
  4. Step 4: Simplify right side
    17,817x = 1,495,368,900
  5. Step 5: Solve for x
    x = 1,495,368,900/17,817
  6. Step 6: Final answer
    x = 83,929.33

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.