Home / 20,836.16-28,753.92-11,404.88

Finding the Fourth Proportional to 20,836.16, 28,753.92 and 11,404.88

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Solution

The fourth proportional to 20,836.16, 28,753.92 and 11,404.88 is: 15,738.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.16 : 28,753.92 = 11,404.88 : x
  2. Step 2: Convert to fraction form
    20,836.16/28,753.92 = 11,404.88/x
  3. Step 3: Cross multiply
    20,836.16x = 28,753.92 × 11,404.88
  4. Step 4: Simplify right side
    20,836.16x = 327,935,007.13
  5. Step 5: Solve for x
    x = 327,935,007.13/20,836.16
  6. Step 6: Final answer
    x = 15,738.74

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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.