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Finding the Third Proportional to 15,163 and 31,897

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Solution

The third proportional to 15,163 and 31,897 is: 67,098.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163 : 31,897 = 31,897 : x
  2. Step 2: Convert to fraction form
    15,163/31,897 = 31,897/x
  3. Step 3: Cross multiply
    15,163x = 31,897 × 31,897
  4. Step 4: Simplify right side
    15,163x = 1,017,418,609
  5. Step 5: Solve for x
    x = 1,017,418,609/15,163
  6. Step 6: Final answer
    x = 67,098.77

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.