Home / 20,198.10-30,304.42-10,342.02

Finding the Fourth Proportional to 20,198.10, 30,304.42 and 10,342.02

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Solution

The fourth proportional to 20,198.10, 30,304.42 and 10,342.02 is: 15,516.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.10 : 30,304.42 = 10,342.02 : x
  2. Step 2: Convert to fraction form
    20,198.10/30,304.42 = 10,342.02/x
  3. Step 3: Cross multiply
    20,198.10x = 30,304.42 × 10,342.02
  4. Step 4: Simplify right side
    20,198.10x = 313,408,917.73
  5. Step 5: Solve for x
    x = 313,408,917.73/20,198.10
  6. Step 6: Final answer
    x = 15,516.75

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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.