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Finding the Third Proportional to 8,631 and 13,447.50

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Solution

The third proportional to 8,631 and 13,447.50 is: 20,951.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631 : 13,447.50 = 13,447.50 : x
  2. Step 2: Convert to fraction form
    8,631/13,447.50 = 13,447.50/x
  3. Step 3: Cross multiply
    8,631x = 13,447.50 × 13,447.50
  4. Step 4: Simplify right side
    8,631x = 180,835,256.25
  5. Step 5: Solve for x
    x = 180,835,256.25/8,631
  6. Step 6: Final answer
    x = 20,951.83

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.