Home / 13,469.25-20,183.37-6,439.60

Finding the Fourth Proportional to 13,469.25, 20,183.37 and 6,439.60

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Solution

The fourth proportional to 13,469.25, 20,183.37 and 6,439.60 is: 9,649.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,469.25 : 20,183.37 = 6,439.60 : x
  2. Step 2: Convert to fraction form
    13,469.25/20,183.37 = 6,439.60/x
  3. Step 3: Cross multiply
    13,469.25x = 20,183.37 × 6,439.60
  4. Step 4: Simplify right side
    13,469.25x = 129,972,830.53
  5. Step 5: Solve for x
    x = 129,972,830.53/13,469.25
  6. Step 6: Final answer
    x = 9,649.60

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1.5x scale

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.