Home / 12,111.46-18,148-9,344.90

Finding the Fourth Proportional to 12,111.46, 18,148 and 9,344.90

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Solution

The fourth proportional to 12,111.46, 18,148 and 9,344.90 is: 14,002.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.46 : 18,148 = 9,344.90 : x
  2. Step 2: Convert to fraction form
    12,111.46/18,148 = 9,344.90/x
  3. Step 3: Cross multiply
    12,111.46x = 18,148 × 9,344.90
  4. Step 4: Simplify right side
    12,111.46x = 169,591,245.20
  5. Step 5: Solve for x
    x = 169,591,245.20/12,111.46
  6. Step 6: Final answer
    x = 14,002.54

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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.