Home / 13,850.40-20,761.20-7,600.80

Finding the Fourth Proportional to 13,850.40, 20,761.20 and 7,600.80

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Solution

The fourth proportional to 13,850.40, 20,761.20 and 7,600.80 is: 11,393.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.40 : 20,761.20 = 7,600.80 : x
  2. Step 2: Convert to fraction form
    13,850.40/20,761.20 = 7,600.80/x
  3. Step 3: Cross multiply
    13,850.40x = 20,761.20 × 7,600.80
  4. Step 4: Simplify right side
    13,850.40x = 157,801,728.96
  5. Step 5: Solve for x
    x = 157,801,728.96/13,850.40
  6. Step 6: Final answer
    x = 11,393.30

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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.