Home / 20,372.18-30,558.29-5,581.22

Finding the Fourth Proportional to 20,372.18, 30,558.29 and 5,581.22

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Solution

The fourth proportional to 20,372.18, 30,558.29 and 5,581.22 is: 8,371.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.18 : 30,558.29 = 5,581.22 : x
  2. Step 2: Convert to fraction form
    20,372.18/30,558.29 = 5,581.22/x
  3. Step 3: Cross multiply
    20,372.18x = 30,558.29 × 5,581.22
  4. Step 4: Simplify right side
    20,372.18x = 170,552,358.62
  5. Step 5: Solve for x
    x = 170,552,358.62/20,372.18
  6. Step 6: Final answer
    x = 8,371.83

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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.