Home / 18,406.75-27,599.60-8,540.95

Finding the Fourth Proportional to 18,406.75, 27,599.60 and 8,540.95

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Solution

The fourth proportional to 18,406.75, 27,599.60 and 8,540.95 is: 12,806.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.75 : 27,599.60 = 8,540.95 : x
  2. Step 2: Convert to fraction form
    18,406.75/27,599.60 = 8,540.95/x
  3. Step 3: Cross multiply
    18,406.75x = 27,599.60 × 8,540.95
  4. Step 4: Simplify right side
    18,406.75x = 235,726,760.92
  5. Step 5: Solve for x
    x = 235,726,760.92/18,406.75
  6. Step 6: Final answer
    x = 12,806.54

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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.