Home / 13,961.20-20,944.80-4,099.60

Finding the Fourth Proportional to 13,961.20, 20,944.80 and 4,099.60

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Solution

The fourth proportional to 13,961.20, 20,944.80 and 4,099.60 is: 6,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.20 : 20,944.80 = 4,099.60 : x
  2. Step 2: Convert to fraction form
    13,961.20/20,944.80 = 4,099.60/x
  3. Step 3: Cross multiply
    13,961.20x = 20,944.80 × 4,099.60
  4. Step 4: Simplify right side
    13,961.20x = 85,865,302.08
  5. Step 5: Solve for x
    x = 85,865,302.08/13,961.20
  6. Step 6: Final answer
    x = 6,150.28

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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.