Home / 11,915.85-17,876.88-4,520.46

Finding the Fourth Proportional to 11,915.85, 17,876.88 and 4,520.46

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Solution

The fourth proportional to 11,915.85, 17,876.88 and 4,520.46 is: 6,781.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.85 : 17,876.88 = 4,520.46 : x
  2. Step 2: Convert to fraction form
    11,915.85/17,876.88 = 4,520.46/x
  3. Step 3: Cross multiply
    11,915.85x = 17,876.88 × 4,520.46
  4. Step 4: Simplify right side
    11,915.85x = 80,811,720.96
  5. Step 5: Solve for x
    x = 80,811,720.96/11,915.85
  6. Step 6: Final answer
    x = 6,781.87

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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.