Home / 20,613.44-28,446.55-11,660.75

Finding the Fourth Proportional to 20,613.44, 28,446.55 and 11,660.75

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Solution

The fourth proportional to 20,613.44, 28,446.55 and 11,660.75 is: 16,091.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.44 : 28,446.55 = 11,660.75 : x
  2. Step 2: Convert to fraction form
    20,613.44/28,446.55 = 11,660.75/x
  3. Step 3: Cross multiply
    20,613.44x = 28,446.55 × 11,660.75
  4. Step 4: Simplify right side
    20,613.44x = 331,708,107.91
  5. Step 5: Solve for x
    x = 331,708,107.91/20,613.44
  6. Step 6: Final answer
    x = 16,091.84

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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.