Home / 20,398.43-30,576.60-8,559.08

Finding the Fourth Proportional to 20,398.43, 30,576.60 and 8,559.08

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Solution

The fourth proportional to 20,398.43, 30,576.60 and 8,559.08 is: 12,829.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.43 : 30,576.60 = 8,559.08 : x
  2. Step 2: Convert to fraction form
    20,398.43/30,576.60 = 8,559.08/x
  3. Step 3: Cross multiply
    20,398.43x = 30,576.60 × 8,559.08
  4. Step 4: Simplify right side
    20,398.43x = 261,707,565.53
  5. Step 5: Solve for x
    x = 261,707,565.53/20,398.43
  6. Step 6: Final answer
    x = 12,829.79

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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.