Home / 12,660.60-18,991.82-4,869.42

Finding the Fourth Proportional to 12,660.60, 18,991.82 and 4,869.42

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Solution

The fourth proportional to 12,660.60, 18,991.82 and 4,869.42 is: 7,304.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.60 : 18,991.82 = 4,869.42 : x
  2. Step 2: Convert to fraction form
    12,660.60/18,991.82 = 4,869.42/x
  3. Step 3: Cross multiply
    12,660.60x = 18,991.82 × 4,869.42
  4. Step 4: Simplify right side
    12,660.60x = 92,479,148.14
  5. Step 5: Solve for x
    x = 92,479,148.14/12,660.60
  6. Step 6: Final answer
    x = 7,304.48

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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.