Home / 12,212.68-18,306.26-5,643.18

Finding the Fourth Proportional to 12,212.68, 18,306.26 and 5,643.18

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Solution

The fourth proportional to 12,212.68, 18,306.26 and 5,643.18 is: 8,458.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.68 : 18,306.26 = 5,643.18 : x
  2. Step 2: Convert to fraction form
    12,212.68/18,306.26 = 5,643.18/x
  3. Step 3: Cross multiply
    12,212.68x = 18,306.26 × 5,643.18
  4. Step 4: Simplify right side
    12,212.68x = 103,305,520.31
  5. Step 5: Solve for x
    x = 103,305,520.31/12,212.68
  6. Step 6: Final answer
    x = 8,458.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.