Home / 11,947.20-17,929.92-4,162.56

Finding the Fourth Proportional to 11,947.20, 17,929.92 and 4,162.56

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Solution

The fourth proportional to 11,947.20, 17,929.92 and 4,162.56 is: 6,247.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.20 : 17,929.92 = 4,162.56 : x
  2. Step 2: Convert to fraction form
    11,947.20/17,929.92 = 4,162.56/x
  3. Step 3: Cross multiply
    11,947.20x = 17,929.92 × 4,162.56
  4. Step 4: Simplify right side
    11,947.20x = 74,634,367.80
  5. Step 5: Solve for x
    x = 74,634,367.80/11,947.20
  6. Step 6: Final answer
    x = 6,247.02

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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.