Home / 11,246.20-16,869.30-8,135.80

Finding the Fourth Proportional to 11,246.20, 16,869.30 and 8,135.80

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Solution

The fourth proportional to 11,246.20, 16,869.30 and 8,135.80 is: 12,203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,246.20 : 16,869.30 = 8,135.80 : x
  2. Step 2: Convert to fraction form
    11,246.20/16,869.30 = 8,135.80/x
  3. Step 3: Cross multiply
    11,246.20x = 16,869.30 × 8,135.80
  4. Step 4: Simplify right side
    11,246.20x = 137,245,250.94
  5. Step 5: Solve for x
    x = 137,245,250.94/11,246.20
  6. Step 6: Final answer
    x = 12,203.70

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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.