Home / 12,004.68-18,008.82-4,212.12

Finding the Fourth Proportional to 12,004.68, 18,008.82 and 4,212.12

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Solution

The fourth proportional to 12,004.68, 18,008.82 and 4,212.12 is: 6,318.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,004.68 : 18,008.82 = 4,212.12 : x
  2. Step 2: Convert to fraction form
    12,004.68/18,008.82 = 4,212.12/x
  3. Step 3: Cross multiply
    12,004.68x = 18,008.82 × 4,212.12
  4. Step 4: Simplify right side
    12,004.68x = 75,855,310.90
  5. Step 5: Solve for x
    x = 75,855,310.90/12,004.68
  6. Step 6: Final answer
    x = 6,318.81

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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.