Home / 11,818.96-17,729.38-3,921.19

Finding the Fourth Proportional to 11,818.96, 17,729.38 and 3,921.19

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Solution

The fourth proportional to 11,818.96, 17,729.38 and 3,921.19 is: 5,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.96 : 17,729.38 = 3,921.19 : x
  2. Step 2: Convert to fraction form
    11,818.96/17,729.38 = 3,921.19/x
  3. Step 3: Cross multiply
    11,818.96x = 17,729.38 × 3,921.19
  4. Step 4: Simplify right side
    11,818.96x = 69,520,267.56
  5. Step 5: Solve for x
    x = 69,520,267.56/11,818.96
  6. Step 6: Final answer
    x = 5,882.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.