Home / 11,979.60-17,966.20-3,659.60

Finding the Fourth Proportional to 11,979.60, 17,966.20 and 3,659.60

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Solution

The fourth proportional to 11,979.60, 17,966.20 and 3,659.60 is: 5,488.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.60 : 17,966.20 = 3,659.60 : x
  2. Step 2: Convert to fraction form
    11,979.60/17,966.20 = 3,659.60/x
  3. Step 3: Cross multiply
    11,979.60x = 17,966.20 × 3,659.60
  4. Step 4: Simplify right side
    11,979.60x = 65,749,105.52
  5. Step 5: Solve for x
    x = 65,749,105.52/11,979.60
  6. Step 6: Final answer
    x = 5,488.42

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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.