Home / 12,142.27-18,195.68-5,379.69

Finding the Fourth Proportional to 12,142.27, 18,195.68 and 5,379.69

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Solution

The fourth proportional to 12,142.27, 18,195.68 and 5,379.69 is: 8,061.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.27 : 18,195.68 = 5,379.69 : x
  2. Step 2: Convert to fraction form
    12,142.27/18,195.68 = 5,379.69/x
  3. Step 3: Cross multiply
    12,142.27x = 18,195.68 × 5,379.69
  4. Step 4: Simplify right side
    12,142.27x = 97,887,163.23
  5. Step 5: Solve for x
    x = 97,887,163.23/12,142.27
  6. Step 6: Final answer
    x = 8,061.69

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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.