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Finding the Third Proportional to 18,489.38 and 30,187.13

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Solution

The third proportional to 18,489.38 and 30,187.13 is: 49,285.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.38 : 30,187.13 = 30,187.13 : x
  2. Step 2: Convert to fraction form
    18,489.38/30,187.13 = 30,187.13/x
  3. Step 3: Cross multiply
    18,489.38x = 30,187.13 × 30,187.13
  4. Step 4: Simplify right side
    18,489.38x = 911,262,515.77
  5. Step 5: Solve for x
    x = 911,262,515.77/18,489.38
  6. Step 6: Final answer
    x = 49,285.74

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.