Home / 12,540.53-18,804.11-4,217.78

Finding the Fourth Proportional to 12,540.53, 18,804.11 and 4,217.78

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Solution

The fourth proportional to 12,540.53, 18,804.11 and 4,217.78 is: 6,324.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.53 : 18,804.11 = 4,217.78 : x
  2. Step 2: Convert to fraction form
    12,540.53/18,804.11 = 4,217.78/x
  3. Step 3: Cross multiply
    12,540.53x = 18,804.11 × 4,217.78
  4. Step 4: Simplify right side
    12,540.53x = 79,311,483.97
  5. Step 5: Solve for x
    x = 79,311,483.97/12,540.53
  6. Step 6: Final answer
    x = 6,324.41

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1.5x scale

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.