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Finding the Fourth Proportional to 20,238.08, 30,318.08 and 11,446.08

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Solution

The fourth proportional to 20,238.08, 30,318.08 and 11,446.08 is: 17,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.08 : 30,318.08 = 11,446.08 : x
  2. Step 2: Convert to fraction form
    20,238.08/30,318.08 = 11,446.08/x
  3. Step 3: Cross multiply
    20,238.08x = 30,318.08 × 11,446.08
  4. Step 4: Simplify right side
    20,238.08x = 347,023,169.13
  5. Step 5: Solve for x
    x = 347,023,169.13/20,238.08
  6. Step 6: Final answer
    x = 17,147.04

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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.