Home / 12,418.55-18,630.12-4,099.14

Finding the Fourth Proportional to 12,418.55, 18,630.12 and 4,099.14

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Solution

The fourth proportional to 12,418.55, 18,630.12 and 4,099.14 is: 6,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,418.55 : 18,630.12 = 4,099.14 : x
  2. Step 2: Convert to fraction form
    12,418.55/18,630.12 = 4,099.14/x
  3. Step 3: Cross multiply
    12,418.55x = 18,630.12 × 4,099.14
  4. Step 4: Simplify right side
    12,418.55x = 76,367,470.10
  5. Step 5: Solve for x
    x = 76,367,470.10/12,418.55
  6. Step 6: Final answer
    x = 6,149.47

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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.