Home / 20,149.67-27,806.51-11,198.04

Finding the Fourth Proportional to 20,149.67, 27,806.51 and 11,198.04

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Solution

The fourth proportional to 20,149.67, 27,806.51 and 11,198.04 is: 15,453.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.67 : 27,806.51 = 11,198.04 : x
  2. Step 2: Convert to fraction form
    20,149.67/27,806.51 = 11,198.04/x
  3. Step 3: Cross multiply
    20,149.67x = 27,806.51 × 11,198.04
  4. Step 4: Simplify right side
    20,149.67x = 311,378,355.25
  5. Step 5: Solve for x
    x = 311,378,355.25/20,149.67
  6. Step 6: Final answer
    x = 15,453.28

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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.