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Finding the Third Proportional to 15,687 and 34,531.50

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Solution

The third proportional to 15,687 and 34,531.50 is: 76,013.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,687 : 34,531.50 = 34,531.50 : x
  2. Step 2: Convert to fraction form
    15,687/34,531.50 = 34,531.50/x
  3. Step 3: Cross multiply
    15,687x = 34,531.50 × 34,531.50
  4. Step 4: Simplify right side
    15,687x = 1,192,424,492.25
  5. Step 5: Solve for x
    x = 1,192,424,492.25/15,687
  6. Step 6: Final answer
    x = 76,013.55

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.