Home / 20,118.13-30,173.76-5,328.55

Finding the Fourth Proportional to 20,118.13, 30,173.76 and 5,328.55

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Solution

The fourth proportional to 20,118.13, 30,173.76 and 5,328.55 is: 7,991.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.13 : 30,173.76 = 5,328.55 : x
  2. Step 2: Convert to fraction form
    20,118.13/30,173.76 = 5,328.55/x
  3. Step 3: Cross multiply
    20,118.13x = 30,173.76 × 5,328.55
  4. Step 4: Simplify right side
    20,118.13x = 160,782,388.85
  5. Step 5: Solve for x
    x = 160,782,388.85/20,118.13
  6. Step 6: Final answer
    x = 7,991.92

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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.