Home / 12,144.80-18,188.96-11,723.89

Finding the Fourth Proportional to 12,144.80, 18,188.96 and 11,723.89

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Solution

The fourth proportional to 12,144.80, 18,188.96 and 11,723.89 is: 17,558.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.80 : 18,188.96 = 11,723.89 : x
  2. Step 2: Convert to fraction form
    12,144.80/18,188.96 = 11,723.89/x
  3. Step 3: Cross multiply
    12,144.80x = 18,188.96 × 11,723.89
  4. Step 4: Simplify right side
    12,144.80x = 213,245,350.09
  5. Step 5: Solve for x
    x = 213,245,350.09/12,144.80
  6. Step 6: Final answer
    x = 17,558.57

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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.