Home / 20,170.32-27,834.18-11,218.68

Finding the Fourth Proportional to 20,170.32, 27,834.18 and 11,218.68

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Solution

The fourth proportional to 20,170.32, 27,834.18 and 11,218.68 is: 15,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.32 : 27,834.18 = 11,218.68 : x
  2. Step 2: Convert to fraction form
    20,170.32/27,834.18 = 11,218.68/x
  3. Step 3: Cross multiply
    20,170.32x = 27,834.18 × 11,218.68
  4. Step 4: Simplify right side
    20,170.32x = 312,262,758.48
  5. Step 5: Solve for x
    x = 312,262,758.48/20,170.32
  6. Step 6: Final answer
    x = 15,481.30

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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.