Home / 20,829.96-31,235.22-12,067.38

Finding the Fourth Proportional to 20,829.96, 31,235.22 and 12,067.38

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Solution

The fourth proportional to 20,829.96, 31,235.22 and 12,067.38 is: 18,095.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.96 : 31,235.22 = 12,067.38 : x
  2. Step 2: Convert to fraction form
    20,829.96/31,235.22 = 12,067.38/x
  3. Step 3: Cross multiply
    20,829.96x = 31,235.22 × 12,067.38
  4. Step 4: Simplify right side
    20,829.96x = 376,927,269.12
  5. Step 5: Solve for x
    x = 376,927,269.12/20,829.96
  6. Step 6: Final answer
    x = 18,095.44

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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.