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Finding the Fourth Proportional to 12,240, 18,359.96 and 3,474.92

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Solution

The fourth proportional to 12,240, 18,359.96 and 3,474.92 is: 5,212.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240 : 18,359.96 = 3,474.92 : x
  2. Step 2: Convert to fraction form
    12,240/18,359.96 = 3,474.92/x
  3. Step 3: Cross multiply
    12,240x = 18,359.96 × 3,474.92
  4. Step 4: Simplify right side
    12,240x = 63,799,283.03
  5. Step 5: Solve for x
    x = 63,799,283.03/12,240
  6. Step 6: Final answer
    x = 5,212.36

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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.