Home / 20,081.34-27,712.71-11,694.78

Finding the Fourth Proportional to 20,081.34, 27,712.71 and 11,694.78

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Solution

The fourth proportional to 20,081.34, 27,712.71 and 11,694.78 is: 16,139.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.34 : 27,712.71 = 11,694.78 : x
  2. Step 2: Convert to fraction form
    20,081.34/27,712.71 = 11,694.78/x
  3. Step 3: Cross multiply
    20,081.34x = 27,712.71 × 11,694.78
  4. Step 4: Simplify right side
    20,081.34x = 324,094,046.65
  5. Step 5: Solve for x
    x = 324,094,046.65/20,081.34
  6. Step 6: Final answer
    x = 16,139.06

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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.