Home / 12,144.96-18,217.92-3,380.64

Finding the Fourth Proportional to 12,144.96, 18,217.92 and 3,380.64

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Solution

The fourth proportional to 12,144.96, 18,217.92 and 3,380.64 is: 5,071.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.96 : 18,217.92 = 3,380.64 : x
  2. Step 2: Convert to fraction form
    12,144.96/18,217.92 = 3,380.64/x
  3. Step 3: Cross multiply
    12,144.96x = 18,217.92 × 3,380.64
  4. Step 4: Simplify right side
    12,144.96x = 61,588,229.07
  5. Step 5: Solve for x
    x = 61,588,229.07/12,144.96
  6. Step 6: Final answer
    x = 5,071.09

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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.