Home / 20,579.62-30,871.71-8,098

Finding the Fourth Proportional to 20,579.62, 30,871.71 and 8,098

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Solution

The fourth proportional to 20,579.62, 30,871.71 and 8,098 is: 12,147.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.62 : 30,871.71 = 8,098 : x
  2. Step 2: Convert to fraction form
    20,579.62/30,871.71 = 8,098/x
  3. Step 3: Cross multiply
    20,579.62x = 30,871.71 × 8,098
  4. Step 4: Simplify right side
    20,579.62x = 249,999,107.58
  5. Step 5: Solve for x
    x = 249,999,107.58/20,579.62
  6. Step 6: Final answer
    x = 12,147.90

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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.