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Finding the Third Proportional to 18,538.24 and 28,687.29

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Solution

The third proportional to 18,538.24 and 28,687.29 is: 44,392.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.24 : 28,687.29 = 28,687.29 : x
  2. Step 2: Convert to fraction form
    18,538.24/28,687.29 = 28,687.29/x
  3. Step 3: Cross multiply
    18,538.24x = 28,687.29 × 28,687.29
  4. Step 4: Simplify right side
    18,538.24x = 822,960,553.76
  5. Step 5: Solve for x
    x = 822,960,553.76/18,538.24
  6. Step 6: Final answer
    x = 44,392.59

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.