Home / 20,823.05-31,263.87-12,067.76

Finding the Fourth Proportional to 20,823.05, 31,263.87 and 12,067.76

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Solution

The fourth proportional to 20,823.05, 31,263.87 and 12,067.76 is: 18,118.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.05 : 31,263.87 = 12,067.76 : x
  2. Step 2: Convert to fraction form
    20,823.05/31,263.87 = 12,067.76/x
  3. Step 3: Cross multiply
    20,823.05x = 31,263.87 × 12,067.76
  4. Step 4: Simplify right side
    20,823.05x = 377,284,879.83
  5. Step 5: Solve for x
    x = 377,284,879.83/20,823.05
  6. Step 6: Final answer
    x = 18,118.62

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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.