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Finding the Third Proportional to 8,125.31 and 12,700.13

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Solution

The third proportional to 8,125.31 and 12,700.13 is: 19,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.31 : 12,700.13 = 12,700.13 : x
  2. Step 2: Convert to fraction form
    8,125.31/12,700.13 = 12,700.13/x
  3. Step 3: Cross multiply
    8,125.31x = 12,700.13 × 12,700.13
  4. Step 4: Simplify right side
    8,125.31x = 161,293,175.02
  5. Step 5: Solve for x
    x = 161,293,175.02/8,125.31
  6. Step 6: Final answer
    x = 19,850.70

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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.