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Finding the Third Proportional to 12,750 and 18,731.25

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Solution

The third proportional to 12,750 and 18,731.25 is: 27,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750 : 18,731.25 = 18,731.25 : x
  2. Step 2: Convert to fraction form
    12,750/18,731.25 = 18,731.25/x
  3. Step 3: Cross multiply
    12,750x = 18,731.25 × 18,731.25
  4. Step 4: Simplify right side
    12,750x = 350,859,726.56
  5. Step 5: Solve for x
    x = 350,859,726.56/12,750
  6. Step 6: Final answer
    x = 27,518.41

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.