Home / 20,859.06-31,282.07-6,815.91

Finding the Fourth Proportional to 20,859.06, 31,282.07 and 6,815.91

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Solution

The fourth proportional to 20,859.06, 31,282.07 and 6,815.91 is: 10,221.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.06 : 31,282.07 = 6,815.91 : x
  2. Step 2: Convert to fraction form
    20,859.06/31,282.07 = 6,815.91/x
  3. Step 3: Cross multiply
    20,859.06x = 31,282.07 × 6,815.91
  4. Step 4: Simplify right side
    20,859.06x = 213,215,739.65
  5. Step 5: Solve for x
    x = 213,215,739.65/20,859.06
  6. Step 6: Final answer
    x = 10,221.73

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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.