Home / 20,081.88-27,712.26-12,123.36

Finding the Fourth Proportional to 20,081.88, 27,712.26 and 12,123.36

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Solution

The fourth proportional to 20,081.88, 27,712.26 and 12,123.36 is: 16,729.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.88 : 27,712.26 = 12,123.36 : x
  2. Step 2: Convert to fraction form
    20,081.88/27,712.26 = 12,123.36/x
  3. Step 3: Cross multiply
    20,081.88x = 27,712.26 × 12,123.36
  4. Step 4: Simplify right side
    20,081.88x = 335,965,704.39
  5. Step 5: Solve for x
    x = 335,965,704.39/20,081.88
  6. Step 6: Final answer
    x = 16,729.79

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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.