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Finding the Third Proportional to 18,255.38 and 39,278.25

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Solution

The third proportional to 18,255.38 and 39,278.25 is: 84,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.38 : 39,278.25 = 39,278.25 : x
  2. Step 2: Convert to fraction form
    18,255.38/39,278.25 = 39,278.25/x
  3. Step 3: Cross multiply
    18,255.38x = 39,278.25 × 39,278.25
  4. Step 4: Simplify right side
    18,255.38x = 1,542,780,923.06
  5. Step 5: Solve for x
    x = 1,542,780,923.06/18,255.38
  6. Step 6: Final answer
    x = 84,511.05

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These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.