Home / 20,151.66-27,808.72-11,198.73

Finding the Fourth Proportional to 20,151.66, 27,808.72 and 11,198.73

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Solution

The fourth proportional to 20,151.66, 27,808.72 and 11,198.73 is: 15,453.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.66 : 27,808.72 = 11,198.73 : x
  2. Step 2: Convert to fraction form
    20,151.66/27,808.72 = 11,198.73/x
  3. Step 3: Cross multiply
    20,151.66x = 27,808.72 × 11,198.73
  4. Step 4: Simplify right side
    20,151.66x = 311,422,346.93
  5. Step 5: Solve for x
    x = 311,422,346.93/20,151.66
  6. Step 6: Final answer
    x = 15,453.93

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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.