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Finding the Third Proportional to 20,115.84 and 28,108.27

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Solution

The third proportional to 20,115.84 and 28,108.27 is: 39,276.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.84 : 28,108.27 = 28,108.27 : x
  2. Step 2: Convert to fraction form
    20,115.84/28,108.27 = 28,108.27/x
  3. Step 3: Cross multiply
    20,115.84x = 28,108.27 × 28,108.27
  4. Step 4: Simplify right side
    20,115.84x = 790,074,596.45
  5. Step 5: Solve for x
    x = 790,074,596.45/20,115.84
  6. Step 6: Final answer
    x = 39,276.23

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.