Home / 20,662.38-30,992.76-8,811.27

Finding the Fourth Proportional to 20,662.38, 30,992.76 and 8,811.27

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Solution

The fourth proportional to 20,662.38, 30,992.76 and 8,811.27 is: 13,216.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.38 : 30,992.76 = 8,811.27 : x
  2. Step 2: Convert to fraction form
    20,662.38/30,992.76 = 8,811.27/x
  3. Step 3: Cross multiply
    20,662.38x = 30,992.76 × 8,811.27
  4. Step 4: Simplify right side
    20,662.38x = 273,085,576.41
  5. Step 5: Solve for x
    x = 273,085,576.41/20,662.38
  6. Step 6: Final answer
    x = 13,216.56

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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.