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Finding the Third Proportional to 8,387 and 12,944.50

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Solution

The third proportional to 8,387 and 12,944.50 is: 19,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387 : 12,944.50 = 12,944.50 : x
  2. Step 2: Convert to fraction form
    8,387/12,944.50 = 12,944.50/x
  3. Step 3: Cross multiply
    8,387x = 12,944.50 × 12,944.50
  4. Step 4: Simplify right side
    8,387x = 167,560,080.25
  5. Step 5: Solve for x
    x = 167,560,080.25/8,387
  6. Step 6: Final answer
    x = 19,978.55

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.