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Finding the Fourth Proportional to 12,660.62, 18,993.15 and 4,868.82

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Solution

The fourth proportional to 12,660.62, 18,993.15 and 4,868.82 is: 7,304.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.62 : 18,993.15 = 4,868.82 : x
  2. Step 2: Convert to fraction form
    12,660.62/18,993.15 = 4,868.82/x
  3. Step 3: Cross multiply
    12,660.62x = 18,993.15 × 4,868.82
  4. Step 4: Simplify right side
    12,660.62x = 92,474,228.58
  5. Step 5: Solve for x
    x = 92,474,228.58/12,660.62
  6. Step 6: Final answer
    x = 7,304.09

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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.