Home / 11,324.13-16,989.20-3,928.57

Finding the Fourth Proportional to 11,324.13, 16,989.20 and 3,928.57

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Solution

The fourth proportional to 11,324.13, 16,989.20 and 3,928.57 is: 5,893.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,324.13 : 16,989.20 = 3,928.57 : x
  2. Step 2: Convert to fraction form
    11,324.13/16,989.20 = 3,928.57/x
  3. Step 3: Cross multiply
    11,324.13x = 16,989.20 × 3,928.57
  4. Step 4: Simplify right side
    11,324.13x = 66,743,261.44
  5. Step 5: Solve for x
    x = 66,743,261.44/11,324.13
  6. Step 6: Final answer
    x = 5,893.90

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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.