Home / 12,378.36-18,563.88-3,610.53

Finding the Fourth Proportional to 12,378.36, 18,563.88 and 3,610.53

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Solution

The fourth proportional to 12,378.36, 18,563.88 and 3,610.53 is: 5,414.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.36 : 18,563.88 = 3,610.53 : x
  2. Step 2: Convert to fraction form
    12,378.36/18,563.88 = 3,610.53/x
  3. Step 3: Cross multiply
    12,378.36x = 18,563.88 × 3,610.53
  4. Step 4: Simplify right side
    12,378.36x = 67,025,445.66
  5. Step 5: Solve for x
    x = 67,025,445.66/12,378.36
  6. Step 6: Final answer
    x = 5,414.73

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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.