Home / 13,581.22-20,380.87-5,582.55

Finding the Fourth Proportional to 13,581.22, 20,380.87 and 5,582.55

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Solution

The fourth proportional to 13,581.22, 20,380.87 and 5,582.55 is: 8,377.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.22 : 20,380.87 = 5,582.55 : x
  2. Step 2: Convert to fraction form
    13,581.22/20,380.87 = 5,582.55/x
  3. Step 3: Cross multiply
    13,581.22x = 20,380.87 × 5,582.55
  4. Step 4: Simplify right side
    13,581.22x = 113,777,225.82
  5. Step 5: Solve for x
    x = 113,777,225.82/13,581.22
  6. Step 6: Final answer
    x = 8,377.54

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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.