Home / 12,221.14-18,329.32-3,898.92

Finding the Fourth Proportional to 12,221.14, 18,329.32 and 3,898.92

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Solution

The fourth proportional to 12,221.14, 18,329.32 and 3,898.92 is: 5,847.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.14 : 18,329.32 = 3,898.92 : x
  2. Step 2: Convert to fraction form
    12,221.14/18,329.32 = 3,898.92/x
  3. Step 3: Cross multiply
    12,221.14x = 18,329.32 × 3,898.92
  4. Step 4: Simplify right side
    12,221.14x = 71,464,552.33
  5. Step 5: Solve for x
    x = 71,464,552.33/12,221.14
  6. Step 6: Final answer
    x = 5,847.62

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1.5x scale

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.