Home / 20,449.96-28,218.78-11,373.85

Finding the Fourth Proportional to 20,449.96, 28,218.78 and 11,373.85

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Solution

The fourth proportional to 20,449.96, 28,218.78 and 11,373.85 is: 15,694.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.96 : 28,218.78 = 11,373.85 : x
  2. Step 2: Convert to fraction form
    20,449.96/28,218.78 = 11,373.85/x
  3. Step 3: Cross multiply
    20,449.96x = 28,218.78 × 11,373.85
  4. Step 4: Simplify right side
    20,449.96x = 320,956,170.90
  5. Step 5: Solve for x
    x = 320,956,170.90/20,449.96
  6. Step 6: Final answer
    x = 15,694.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.