Home / 13,613.44-20,419.92-7,757.56

Finding the Fourth Proportional to 13,613.44, 20,419.92 and 7,757.56

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Solution

The fourth proportional to 13,613.44, 20,419.92 and 7,757.56 is: 11,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.44 : 20,419.92 = 7,757.56 : x
  2. Step 2: Convert to fraction form
    13,613.44/20,419.92 = 7,757.56/x
  3. Step 3: Cross multiply
    13,613.44x = 20,419.92 × 7,757.56
  4. Step 4: Simplify right side
    13,613.44x = 158,408,754.60
  5. Step 5: Solve for x
    x = 158,408,754.60/13,613.44
  6. Step 6: Final answer
    x = 11,636.20

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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.