Home / 20,816.20-31,199.14-12,033.04

Finding the Fourth Proportional to 20,816.20, 31,199.14 and 12,033.04

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Solution

The fourth proportional to 20,816.20, 31,199.14 and 12,033.04 is: 18,035.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.20 : 31,199.14 = 12,033.04 : x
  2. Step 2: Convert to fraction form
    20,816.20/31,199.14 = 12,033.04/x
  3. Step 3: Cross multiply
    20,816.20x = 31,199.14 × 12,033.04
  4. Step 4: Simplify right side
    20,816.20x = 375,420,499.59
  5. Step 5: Solve for x
    x = 375,420,499.59/20,816.20
  6. Step 6: Final answer
    x = 18,035.02

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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.