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Finding the Fourth Proportional to 20,505.27, 30,757.91 and 11,734.09

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Solution

The fourth proportional to 20,505.27, 30,757.91 and 11,734.09 is: 17,601.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.27 : 30,757.91 = 11,734.09 : x
  2. Step 2: Convert to fraction form
    20,505.27/30,757.91 = 11,734.09/x
  3. Step 3: Cross multiply
    20,505.27x = 30,757.91 × 11,734.09
  4. Step 4: Simplify right side
    20,505.27x = 360,916,084.15
  5. Step 5: Solve for x
    x = 360,916,084.15/20,505.27
  6. Step 6: Final answer
    x = 17,601.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.