Home / 20,704.22-31,046.81-6,661.65

Finding the Fourth Proportional to 20,704.22, 31,046.81 and 6,661.65

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Solution

The fourth proportional to 20,704.22, 31,046.81 and 6,661.65 is: 9,989.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.22 : 31,046.81 = 6,661.65 : x
  2. Step 2: Convert to fraction form
    20,704.22/31,046.81 = 6,661.65/x
  3. Step 3: Cross multiply
    20,704.22x = 31,046.81 × 6,661.65
  4. Step 4: Simplify right side
    20,704.22x = 206,822,948.53
  5. Step 5: Solve for x
    x = 206,822,948.53/20,704.22
  6. Step 6: Final answer
    x = 9,989.41

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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.