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Finding the Third Proportional to 17,900 and 38,169

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Solution

The third proportional to 17,900 and 38,169 is: 81,389.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,900 : 38,169 = 38,169 : x
  2. Step 2: Convert to fraction form
    17,900/38,169 = 38,169/x
  3. Step 3: Cross multiply
    17,900x = 38,169 × 38,169
  4. Step 4: Simplify right side
    17,900x = 1,456,872,561
  5. Step 5: Solve for x
    x = 1,456,872,561/17,900
  6. Step 6: Final answer
    x = 81,389.53

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.