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Finding the Third Proportional to 18,217.13 and 39,228.75

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Solution

The third proportional to 18,217.13 and 39,228.75 is: 84,475.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.13 : 39,228.75 = 39,228.75 : x
  2. Step 2: Convert to fraction form
    18,217.13/39,228.75 = 39,228.75/x
  3. Step 3: Cross multiply
    18,217.13x = 39,228.75 × 39,228.75
  4. Step 4: Simplify right side
    18,217.13x = 1,538,894,826.56
  5. Step 5: Solve for x
    x = 1,538,894,826.56/18,217.13
  6. Step 6: Final answer
    x = 84,475.18

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1.5x scale

Why These Related Problems?

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