Home / 20,151.54-27,809.10-11,198.76

Finding the Fourth Proportional to 20,151.54, 27,809.10 and 11,198.76

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Solution

The fourth proportional to 20,151.54, 27,809.10 and 11,198.76 is: 15,454.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.54 : 27,809.10 = 11,198.76 : x
  2. Step 2: Convert to fraction form
    20,151.54/27,809.10 = 11,198.76/x
  3. Step 3: Cross multiply
    20,151.54x = 27,809.10 × 11,198.76
  4. Step 4: Simplify right side
    20,151.54x = 311,427,436.72
  5. Step 5: Solve for x
    x = 311,427,436.72/20,151.54
  6. Step 6: Final answer
    x = 15,454.27

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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.