Home / 20,825.24-31,216.79-7,668.41

Finding the Fourth Proportional to 20,825.24, 31,216.79 and 7,668.41

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Solution

The fourth proportional to 20,825.24, 31,216.79 and 7,668.41 is: 11,494.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.24 : 31,216.79 = 7,668.41 : x
  2. Step 2: Convert to fraction form
    20,825.24/31,216.79 = 7,668.41/x
  3. Step 3: Cross multiply
    20,825.24x = 31,216.79 × 7,668.41
  4. Step 4: Simplify right side
    20,825.24x = 239,383,007.69
  5. Step 5: Solve for x
    x = 239,383,007.69/20,825.24
  6. Step 6: Final answer
    x = 11,494.85

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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.