Home / 20,932.44-31,399.68-8,450.91

Finding the Fourth Proportional to 20,932.44, 31,399.68 and 8,450.91

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Solution

The fourth proportional to 20,932.44, 31,399.68 and 8,450.91 is: 12,676.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.44 : 31,399.68 = 8,450.91 : x
  2. Step 2: Convert to fraction form
    20,932.44/31,399.68 = 8,450.91/x
  3. Step 3: Cross multiply
    20,932.44x = 31,399.68 × 8,450.91
  4. Step 4: Simplify right side
    20,932.44x = 265,355,813.09
  5. Step 5: Solve for x
    x = 265,355,813.09/20,932.44
  6. Step 6: Final answer
    x = 12,676.77

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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.