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Finding the Third Proportional to 18,874.13 and 29,186.91

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Solution

The third proportional to 18,874.13 and 29,186.91 is: 45,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,874.13 : 29,186.91 = 29,186.91 : x
  2. Step 2: Convert to fraction form
    18,874.13/29,186.91 = 29,186.91/x
  3. Step 3: Cross multiply
    18,874.13x = 29,186.91 × 29,186.91
  4. Step 4: Simplify right side
    18,874.13x = 851,875,496.45
  5. Step 5: Solve for x
    x = 851,875,496.45/18,874.13
  6. Step 6: Final answer
    x = 45,134.57

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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.