Home / 11,929.68-17,879.88-4,129.44

Finding the Fourth Proportional to 11,929.68, 17,879.88 and 4,129.44

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Solution

The fourth proportional to 11,929.68, 17,879.88 and 4,129.44 is: 6,189.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.68 : 17,879.88 = 4,129.44 : x
  2. Step 2: Convert to fraction form
    11,929.68/17,879.88 = 4,129.44/x
  3. Step 3: Cross multiply
    11,929.68x = 17,879.88 × 4,129.44
  4. Step 4: Simplify right side
    11,929.68x = 73,833,891.67
  5. Step 5: Solve for x
    x = 73,833,891.67/11,929.68
  6. Step 6: Final answer
    x = 6,189.09

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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.