Home / 10,915.16-16,375.08-3,520.04

Finding the Fourth Proportional to 10,915.16, 16,375.08 and 3,520.04

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Solution

The fourth proportional to 10,915.16, 16,375.08 and 3,520.04 is: 5,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.16 : 16,375.08 = 3,520.04 : x
  2. Step 2: Convert to fraction form
    10,915.16/16,375.08 = 3,520.04/x
  3. Step 3: Cross multiply
    10,915.16x = 16,375.08 × 3,520.04
  4. Step 4: Simplify right side
    10,915.16x = 57,640,936.60
  5. Step 5: Solve for x
    x = 57,640,936.60/10,915.16
  6. Step 6: Final answer
    x = 5,280.81

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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.