Home / 20,118.20-30,174-5,328.04

Finding the Fourth Proportional to 20,118.20, 30,174 and 5,328.04

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Solution

The fourth proportional to 20,118.20, 30,174 and 5,328.04 is: 7,991.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.20 : 30,174 = 5,328.04 : x
  2. Step 2: Convert to fraction form
    20,118.20/30,174 = 5,328.04/x
  3. Step 3: Cross multiply
    20,118.20x = 30,174 × 5,328.04
  4. Step 4: Simplify right side
    20,118.20x = 160,768,278.96
  5. Step 5: Solve for x
    x = 160,768,278.96/20,118.20
  6. Step 6: Final answer
    x = 7,991.19

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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.