Home / 11,984.20-17,982.78-6,145.72

Finding the Fourth Proportional to 11,984.20, 17,982.78 and 6,145.72

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Solution

The fourth proportional to 11,984.20, 17,982.78 and 6,145.72 is: 9,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,984.20 : 17,982.78 = 6,145.72 : x
  2. Step 2: Convert to fraction form
    11,984.20/17,982.78 = 6,145.72/x
  3. Step 3: Cross multiply
    11,984.20x = 17,982.78 × 6,145.72
  4. Step 4: Simplify right side
    11,984.20x = 110,517,130.70
  5. Step 5: Solve for x
    x = 110,517,130.70/11,984.20
  6. Step 6: Final answer
    x = 9,221.90

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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.