Home / 12,069.40-18,104.66-4,279

Finding the Fourth Proportional to 12,069.40, 18,104.66 and 4,279

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Solution

The fourth proportional to 12,069.40, 18,104.66 and 4,279 is: 6,418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,069.40 : 18,104.66 = 4,279 : x
  2. Step 2: Convert to fraction form
    12,069.40/18,104.66 = 4,279/x
  3. Step 3: Cross multiply
    12,069.40x = 18,104.66 × 4,279
  4. Step 4: Simplify right side
    12,069.40x = 77,469,840.14
  5. Step 5: Solve for x
    x = 77,469,840.14/12,069.40
  6. Step 6: Final answer
    x = 6,418.70

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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.