Home / 11,321.80-16,982.70-3,934.60

Finding the Fourth Proportional to 11,321.80, 16,982.70 and 3,934.60

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Solution

The fourth proportional to 11,321.80, 16,982.70 and 3,934.60 is: 5,901.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.80 : 16,982.70 = 3,934.60 : x
  2. Step 2: Convert to fraction form
    11,321.80/16,982.70 = 3,934.60/x
  3. Step 3: Cross multiply
    11,321.80x = 16,982.70 × 3,934.60
  4. Step 4: Simplify right side
    11,321.80x = 66,820,131.42
  5. Step 5: Solve for x
    x = 66,820,131.42/11,321.80
  6. Step 6: Final answer
    x = 5,901.90

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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.