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Finding the Third Proportional to 18,982.13 and 28,319.25

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Solution

The third proportional to 18,982.13 and 28,319.25 is: 42,249.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,982.13 : 28,319.25 = 28,319.25 : x
  2. Step 2: Convert to fraction form
    18,982.13/28,319.25 = 28,319.25/x
  3. Step 3: Cross multiply
    18,982.13x = 28,319.25 × 28,319.25
  4. Step 4: Simplify right side
    18,982.13x = 801,979,920.56
  5. Step 5: Solve for x
    x = 801,979,920.56/18,982.13
  6. Step 6: Final answer
    x = 42,249.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.