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Finding the Third Proportional to 8,625.79 and 18,572.89

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Solution

The third proportional to 8,625.79 and 18,572.89 is: 39,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.79 : 18,572.89 = 18,572.89 : x
  2. Step 2: Convert to fraction form
    8,625.79/18,572.89 = 18,572.89/x
  3. Step 3: Cross multiply
    8,625.79x = 18,572.89 × 18,572.89
  4. Step 4: Simplify right side
    8,625.79x = 344,952,193.62
  5. Step 5: Solve for x
    x = 344,952,193.62/8,625.79
  6. Step 6: Final answer
    x = 39,990.80

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.