Home / 12,144.96-18,217.26-3,379.86

Finding the Fourth Proportional to 12,144.96, 18,217.26 and 3,379.86

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Solution

The fourth proportional to 12,144.96, 18,217.26 and 3,379.86 is: 5,069.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.96 : 18,217.26 = 3,379.86 : x
  2. Step 2: Convert to fraction form
    12,144.96/18,217.26 = 3,379.86/x
  3. Step 3: Cross multiply
    12,144.96x = 18,217.26 × 3,379.86
  4. Step 4: Simplify right side
    12,144.96x = 61,571,788.38
  5. Step 5: Solve for x
    x = 61,571,788.38/12,144.96
  6. Step 6: Final answer
    x = 5,069.74

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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.