Home / 21,827.20-32,724.60-8,672.80

Finding the Fourth Proportional to 21,827.20, 32,724.60 and 8,672.80

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Solution

The fourth proportional to 21,827.20, 32,724.60 and 8,672.80 is: 13,002.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.20 : 32,724.60 = 8,672.80 : x
  2. Step 2: Convert to fraction form
    21,827.20/32,724.60 = 8,672.80/x
  3. Step 3: Cross multiply
    21,827.20x = 32,724.60 × 8,672.80
  4. Step 4: Simplify right side
    21,827.20x = 283,813,910.88
  5. Step 5: Solve for x
    x = 283,813,910.88/21,827.20
  6. Step 6: Final answer
    x = 13,002.76

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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.