Home / 20,247.12-30,387.96-7,943.76

Finding the Fourth Proportional to 20,247.12, 30,387.96 and 7,943.76

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Solution

The fourth proportional to 20,247.12, 30,387.96 and 7,943.76 is: 11,922.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.12 : 30,387.96 = 7,943.76 : x
  2. Step 2: Convert to fraction form
    20,247.12/30,387.96 = 7,943.76/x
  3. Step 3: Cross multiply
    20,247.12x = 30,387.96 × 7,943.76
  4. Step 4: Simplify right side
    20,247.12x = 241,394,661.13
  5. Step 5: Solve for x
    x = 241,394,661.13/20,247.12
  6. Step 6: Final answer
    x = 11,922.42

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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.