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Finding the Fourth Proportional to 12,072, 18,107.19 and 3,306.99

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Solution

The fourth proportional to 12,072, 18,107.19 and 3,306.99 is: 4,960.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072 : 18,107.19 = 3,306.99 : x
  2. Step 2: Convert to fraction form
    12,072/18,107.19 = 3,306.99/x
  3. Step 3: Cross multiply
    12,072x = 18,107.19 × 3,306.99
  4. Step 4: Simplify right side
    12,072x = 59,880,296.26
  5. Step 5: Solve for x
    x = 59,880,296.26/12,072
  6. Step 6: Final answer
    x = 4,960.26

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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.