Home / 13,408.90-20,119.83-5,517.24

Finding the Fourth Proportional to 13,408.90, 20,119.83 and 5,517.24

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Solution

The fourth proportional to 13,408.90, 20,119.83 and 5,517.24 is: 8,278.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.90 : 20,119.83 = 5,517.24 : x
  2. Step 2: Convert to fraction form
    13,408.90/20,119.83 = 5,517.24/x
  3. Step 3: Cross multiply
    13,408.90x = 20,119.83 × 5,517.24
  4. Step 4: Simplify right side
    13,408.90x = 111,005,873.67
  5. Step 5: Solve for x
    x = 111,005,873.67/13,408.90
  6. Step 6: Final answer
    x = 8,278.52

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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.