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Finding the Third Proportional to 20,391.94 and 28,716.75

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Solution

The third proportional to 20,391.94 and 28,716.75 is: 40,440.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.94 : 28,716.75 = 28,716.75 : x
  2. Step 2: Convert to fraction form
    20,391.94/28,716.75 = 28,716.75/x
  3. Step 3: Cross multiply
    20,391.94x = 28,716.75 × 28,716.75
  4. Step 4: Simplify right side
    20,391.94x = 824,651,730.56
  5. Step 5: Solve for x
    x = 824,651,730.56/20,391.94
  6. Step 6: Final answer
    x = 40,440.09

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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.