Home / 19,982.20-29,976.90-8,296.60

Finding the Fourth Proportional to 19,982.20, 29,976.90 and 8,296.60

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Solution

The fourth proportional to 19,982.20, 29,976.90 and 8,296.60 is: 12,446.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.20 : 29,976.90 = 8,296.60 : x
  2. Step 2: Convert to fraction form
    19,982.20/29,976.90 = 8,296.60/x
  3. Step 3: Cross multiply
    19,982.20x = 29,976.90 × 8,296.60
  4. Step 4: Simplify right side
    19,982.20x = 248,706,348.54
  5. Step 5: Solve for x
    x = 248,706,348.54/19,982.20
  6. Step 6: Final answer
    x = 12,446.39

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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.