Home / 20,134.82-27,786.42-11,183.15

Finding the Fourth Proportional to 20,134.82, 27,786.42 and 11,183.15

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Solution

The fourth proportional to 20,134.82, 27,786.42 and 11,183.15 is: 15,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.82 : 27,786.42 = 11,183.15 : x
  2. Step 2: Convert to fraction form
    20,134.82/27,786.42 = 11,183.15/x
  3. Step 3: Cross multiply
    20,134.82x = 27,786.42 × 11,183.15
  4. Step 4: Simplify right side
    20,134.82x = 310,739,646.91
  5. Step 5: Solve for x
    x = 310,739,646.91/20,134.82
  6. Step 6: Final answer
    x = 15,432.95

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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.