Home / 12,212.46-18,320.54-3,890.04

Finding the Fourth Proportional to 12,212.46, 18,320.54 and 3,890.04

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Solution

The fourth proportional to 12,212.46, 18,320.54 and 3,890.04 is: 5,835.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.46 : 18,320.54 = 3,890.04 : x
  2. Step 2: Convert to fraction form
    12,212.46/18,320.54 = 3,890.04/x
  3. Step 3: Cross multiply
    12,212.46x = 18,320.54 × 3,890.04
  4. Step 4: Simplify right side
    12,212.46x = 71,267,613.97
  5. Step 5: Solve for x
    x = 71,267,613.97/12,212.46
  6. Step 6: Final answer
    x = 5,835.65

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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.