Home / 12,531.20-18,794.40-3,766.40

Finding the Fourth Proportional to 12,531.20, 18,794.40 and 3,766.40

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Solution

The fourth proportional to 12,531.20, 18,794.40 and 3,766.40 is: 5,648.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.20 : 18,794.40 = 3,766.40 : x
  2. Step 2: Convert to fraction form
    12,531.20/18,794.40 = 3,766.40/x
  3. Step 3: Cross multiply
    12,531.20x = 18,794.40 × 3,766.40
  4. Step 4: Simplify right side
    12,531.20x = 70,787,228.16
  5. Step 5: Solve for x
    x = 70,787,228.16/12,531.20
  6. Step 6: Final answer
    x = 5,648.88

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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.