Home / 20,584.15-30,869.30-8,100.90

Finding the Fourth Proportional to 20,584.15, 30,869.30 and 8,100.90

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Solution

The fourth proportional to 20,584.15, 30,869.30 and 8,100.90 is: 12,148.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.15 : 30,869.30 = 8,100.90 : x
  2. Step 2: Convert to fraction form
    20,584.15/30,869.30 = 8,100.90/x
  3. Step 3: Cross multiply
    20,584.15x = 30,869.30 × 8,100.90
  4. Step 4: Simplify right side
    20,584.15x = 250,069,132.62
  5. Step 5: Solve for x
    x = 250,069,132.62/20,584.15
  6. Step 6: Final answer
    x = 12,148.63

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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.