Home / 11,979.20-17,967.68-5,652.61

Finding the Fourth Proportional to 11,979.20, 17,967.68 and 5,652.61

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Solution

The fourth proportional to 11,979.20, 17,967.68 and 5,652.61 is: 8,478.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.20 : 17,967.68 = 5,652.61 : x
  2. Step 2: Convert to fraction form
    11,979.20/17,967.68 = 5,652.61/x
  3. Step 3: Cross multiply
    11,979.20x = 17,967.68 × 5,652.61
  4. Step 4: Simplify right side
    11,979.20x = 101,564,235.66
  5. Step 5: Solve for x
    x = 101,564,235.66/11,979.20
  6. Step 6: Final answer
    x = 8,478.38

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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.