Home / 13,801.33-20,687.55-6,399.69

Finding the Fourth Proportional to 13,801.33, 20,687.55 and 6,399.69

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Solution

The fourth proportional to 13,801.33, 20,687.55 and 6,399.69 is: 9,592.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.33 : 20,687.55 = 6,399.69 : x
  2. Step 2: Convert to fraction form
    13,801.33/20,687.55 = 6,399.69/x
  3. Step 3: Cross multiply
    13,801.33x = 20,687.55 × 6,399.69
  4. Step 4: Simplify right side
    13,801.33x = 132,393,906.86
  5. Step 5: Solve for x
    x = 132,393,906.86/13,801.33
  6. Step 6: Final answer
    x = 9,592.84

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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.