Home / 20,151.87-27,808.29-11,198.84

Finding the Fourth Proportional to 20,151.87, 27,808.29 and 11,198.84

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Solution

The fourth proportional to 20,151.87, 27,808.29 and 11,198.84 is: 15,453.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.87 : 27,808.29 = 11,198.84 : x
  2. Step 2: Convert to fraction form
    20,151.87/27,808.29 = 11,198.84/x
  3. Step 3: Cross multiply
    20,151.87x = 27,808.29 × 11,198.84
  4. Step 4: Simplify right side
    20,151.87x = 311,420,451.34
  5. Step 5: Solve for x
    x = 311,420,451.34/20,151.87
  6. Step 6: Final answer
    x = 15,453.68

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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.