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Finding the Third Proportional to 20,392 and 28,716

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Solution

The third proportional to 20,392 and 28,716 is: 40,437.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392 : 28,716 = 28,716 : x
  2. Step 2: Convert to fraction form
    20,392/28,716 = 28,716/x
  3. Step 3: Cross multiply
    20,392x = 28,716 × 28,716
  4. Step 4: Simplify right side
    20,392x = 824,608,656
  5. Step 5: Solve for x
    x = 824,608,656/20,392
  6. Step 6: Final answer
    x = 40,437.85

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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.