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Finding the Third Proportional to 18,859.50 and 39,269.25

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Solution

The third proportional to 18,859.50 and 39,269.25 is: 81,766.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.50 : 39,269.25 = 39,269.25 : x
  2. Step 2: Convert to fraction form
    18,859.50/39,269.25 = 39,269.25/x
  3. Step 3: Cross multiply
    18,859.50x = 39,269.25 × 39,269.25
  4. Step 4: Simplify right side
    18,859.50x = 1,542,073,995.56
  5. Step 5: Solve for x
    x = 1,542,073,995.56/18,859.50
  6. Step 6: Final answer
    x = 81,766.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.