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Finding the Fourth Proportional to 12,012, 18,017.92 and 3,247.80

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Solution

The fourth proportional to 12,012, 18,017.92 and 3,247.80 is: 4,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012 : 18,017.92 = 3,247.80 : x
  2. Step 2: Convert to fraction form
    12,012/18,017.92 = 3,247.80/x
  3. Step 3: Cross multiply
    12,012x = 18,017.92 × 3,247.80
  4. Step 4: Simplify right side
    12,012x = 58,518,600.58
  5. Step 5: Solve for x
    x = 58,518,600.58/12,012
  6. Step 6: Final answer
    x = 4,871.68

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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.