Home / 20,836.13-28,753.88-11,404.71

Finding the Fourth Proportional to 20,836.13, 28,753.88 and 11,404.71

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Solution

The fourth proportional to 20,836.13, 28,753.88 and 11,404.71 is: 15,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.13 : 28,753.88 = 11,404.71 : x
  2. Step 2: Convert to fraction form
    20,836.13/28,753.88 = 11,404.71/x
  3. Step 3: Cross multiply
    20,836.13x = 28,753.88 × 11,404.71
  4. Step 4: Simplify right side
    20,836.13x = 327,929,605.75
  5. Step 5: Solve for x
    x = 327,929,605.75/20,836.13
  6. Step 6: Final answer
    x = 15,738.51

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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.