Home / 13,872.75-20,814.37-8,329.96

Finding the Fourth Proportional to 13,872.75, 20,814.37 and 8,329.96

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Solution

The fourth proportional to 13,872.75, 20,814.37 and 8,329.96 is: 12,498.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.75 : 20,814.37 = 8,329.96 : x
  2. Step 2: Convert to fraction form
    13,872.75/20,814.37 = 8,329.96/x
  3. Step 3: Cross multiply
    13,872.75x = 20,814.37 × 8,329.96
  4. Step 4: Simplify right side
    13,872.75x = 173,382,869.53
  5. Step 5: Solve for x
    x = 173,382,869.53/13,872.75
  6. Step 6: Final answer
    x = 12,498.09

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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.