Home / 20,149.76-27,806.82-11,198.10

Finding the Fourth Proportional to 20,149.76, 27,806.82 and 11,198.10

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Solution

The fourth proportional to 20,149.76, 27,806.82 and 11,198.10 is: 15,453.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.76 : 27,806.82 = 11,198.10 : x
  2. Step 2: Convert to fraction form
    20,149.76/27,806.82 = 11,198.10/x
  3. Step 3: Cross multiply
    20,149.76x = 27,806.82 × 11,198.10
  4. Step 4: Simplify right side
    20,149.76x = 311,383,551.04
  5. Step 5: Solve for x
    x = 311,383,551.04/20,149.76
  6. Step 6: Final answer
    x = 15,453.46

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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.