Home / 20,151.99-27,808.47-11,198.97

Finding the Fourth Proportional to 20,151.99, 27,808.47 and 11,198.97

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Solution

The fourth proportional to 20,151.99, 27,808.47 and 11,198.97 is: 15,453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.99 : 27,808.47 = 11,198.97 : x
  2. Step 2: Convert to fraction form
    20,151.99/27,808.47 = 11,198.97/x
  3. Step 3: Cross multiply
    20,151.99x = 27,808.47 × 11,198.97
  4. Step 4: Simplify right side
    20,151.99x = 311,426,221.28
  5. Step 5: Solve for x
    x = 311,426,221.28/20,151.99
  6. Step 6: Final answer
    x = 15,453.87

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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.