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Finding the Third Proportional to 8,438.50 and 18,494

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Solution

The third proportional to 8,438.50 and 18,494 is: 40,531.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.50 : 18,494 = 18,494 : x
  2. Step 2: Convert to fraction form
    8,438.50/18,494 = 18,494/x
  3. Step 3: Cross multiply
    8,438.50x = 18,494 × 18,494
  4. Step 4: Simplify right side
    8,438.50x = 342,028,036
  5. Step 5: Solve for x
    x = 342,028,036/8,438.50
  6. Step 6: Final answer
    x = 40,531.85

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.