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Finding the Third Proportional to 17,870 and 38,500

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Solution

The third proportional to 17,870 and 38,500 is: 82,946.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,870 : 38,500 = 38,500 : x
  2. Step 2: Convert to fraction form
    17,870/38,500 = 38,500/x
  3. Step 3: Cross multiply
    17,870x = 38,500 × 38,500
  4. Step 4: Simplify right side
    17,870x = 1,482,250,000
  5. Step 5: Solve for x
    x = 1,482,250,000/17,870
  6. Step 6: Final answer
    x = 82,946.28

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.