Home / 12,144.30-18,214.92-3,379.89

Finding the Fourth Proportional to 12,144.30, 18,214.92 and 3,379.89

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Solution

The fourth proportional to 12,144.30, 18,214.92 and 3,379.89 is: 5,069.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.30 : 18,214.92 = 3,379.89 : x
  2. Step 2: Convert to fraction form
    12,144.30/18,214.92 = 3,379.89/x
  3. Step 3: Cross multiply
    12,144.30x = 18,214.92 × 3,379.89
  4. Step 4: Simplify right side
    12,144.30x = 61,564,425.96
  5. Step 5: Solve for x
    x = 61,564,425.96/12,144.30
  6. Step 6: Final answer
    x = 5,069.41

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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.