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Finding the Third Proportional to 10,218.75 and 15,625.13

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Solution

The third proportional to 10,218.75 and 15,625.13 is: 23,891.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.75 : 15,625.13 = 15,625.13 : x
  2. Step 2: Convert to fraction form
    10,218.75/15,625.13 = 15,625.13/x
  3. Step 3: Cross multiply
    10,218.75x = 15,625.13 × 15,625.13
  4. Step 4: Simplify right side
    10,218.75x = 244,144,531.27
  5. Step 5: Solve for x
    x = 244,144,531.27/10,218.75
  6. Step 6: Final answer
    x = 23,891.82

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.