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Finding the Third Proportional to 12,750.50 and 19,792

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Solution

The third proportional to 12,750.50 and 19,792 is: 30,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.50 : 19,792 = 19,792 : x
  2. Step 2: Convert to fraction form
    12,750.50/19,792 = 19,792/x
  3. Step 3: Cross multiply
    12,750.50x = 19,792 × 19,792
  4. Step 4: Simplify right side
    12,750.50x = 391,723,264
  5. Step 5: Solve for x
    x = 391,723,264/12,750.50
  6. Step 6: Final answer
    x = 30,722.19

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.