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Finding the Third Proportional to 15,514 and 20,810

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Solution

The third proportional to 15,514 and 20,810 is: 27,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514 : 20,810 = 20,810 : x
  2. Step 2: Convert to fraction form
    15,514/20,810 = 20,810/x
  3. Step 3: Cross multiply
    15,514x = 20,810 × 20,810
  4. Step 4: Simplify right side
    15,514x = 433,056,100
  5. Step 5: Solve for x
    x = 433,056,100/15,514
  6. Step 6: Final answer
    x = 27,913.89

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.