Home / 13,771.28-20,649.60-5,450.96

Finding the Fourth Proportional to 13,771.28, 20,649.60 and 5,450.96

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Solution

The fourth proportional to 13,771.28, 20,649.60 and 5,450.96 is: 8,173.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.28 : 20,649.60 = 5,450.96 : x
  2. Step 2: Convert to fraction form
    13,771.28/20,649.60 = 5,450.96/x
  3. Step 3: Cross multiply
    13,771.28x = 20,649.60 × 5,450.96
  4. Step 4: Simplify right side
    13,771.28x = 112,560,143.62
  5. Step 5: Solve for x
    x = 112,560,143.62/13,771.28
  6. Step 6: Final answer
    x = 8,173.54

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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.