Home / 20,134.80-30,213.04-11,831.02

Finding the Fourth Proportional to 20,134.80, 30,213.04 and 11,831.02

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Solution

The fourth proportional to 20,134.80, 30,213.04 and 11,831.02 is: 17,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.80 : 30,213.04 = 11,831.02 : x
  2. Step 2: Convert to fraction form
    20,134.80/30,213.04 = 11,831.02/x
  3. Step 3: Cross multiply
    20,134.80x = 30,213.04 × 11,831.02
  4. Step 4: Simplify right side
    20,134.80x = 357,451,080.50
  5. Step 5: Solve for x
    x = 357,451,080.50/20,134.80
  6. Step 6: Final answer
    x = 17,752.90

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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.