Home / 20,929.44-31,367.49-9,811.65

Finding the Fourth Proportional to 20,929.44, 31,367.49 and 9,811.65

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Solution

The fourth proportional to 20,929.44, 31,367.49 and 9,811.65 is: 14,704.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.44 : 31,367.49 = 9,811.65 : x
  2. Step 2: Convert to fraction form
    20,929.44/31,367.49 = 9,811.65/x
  3. Step 3: Cross multiply
    20,929.44x = 31,367.49 × 9,811.65
  4. Step 4: Simplify right side
    20,929.44x = 307,766,833.26
  5. Step 5: Solve for x
    x = 307,766,833.26/20,929.44
  6. Step 6: Final answer
    x = 14,704.97

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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.