Home / 20,163.06-27,827.62-12,205.42

Finding the Fourth Proportional to 20,163.06, 27,827.62 and 12,205.42

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Solution

The fourth proportional to 20,163.06, 27,827.62 and 12,205.42 is: 16,845.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.06 : 27,827.62 = 12,205.42 : x
  2. Step 2: Convert to fraction form
    20,163.06/27,827.62 = 12,205.42/x
  3. Step 3: Cross multiply
    20,163.06x = 27,827.62 × 12,205.42
  4. Step 4: Simplify right side
    20,163.06x = 339,647,689.62
  5. Step 5: Solve for x
    x = 339,647,689.62/20,163.06
  6. Step 6: Final answer
    x = 16,845.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.