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Finding the Third Proportional to 20,385.38 and 28,707.38

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Solution

The third proportional to 20,385.38 and 28,707.38 is: 40,426.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.38 : 28,707.38 = 28,707.38 : x
  2. Step 2: Convert to fraction form
    20,385.38/28,707.38 = 28,707.38/x
  3. Step 3: Cross multiply
    20,385.38x = 28,707.38 × 28,707.38
  4. Step 4: Simplify right side
    20,385.38x = 824,113,379.39
  5. Step 5: Solve for x
    x = 824,113,379.39/20,385.38
  6. Step 6: Final answer
    x = 40,426.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.