Home / 21,067.75-31,606.83-6,276.61

Finding the Fourth Proportional to 21,067.75, 31,606.83 and 6,276.61

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Solution

The fourth proportional to 21,067.75, 31,606.83 and 6,276.61 is: 9,416.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.75 : 31,606.83 = 6,276.61 : x
  2. Step 2: Convert to fraction form
    21,067.75/31,606.83 = 6,276.61/x
  3. Step 3: Cross multiply
    21,067.75x = 31,606.83 × 6,276.61
  4. Step 4: Simplify right side
    21,067.75x = 198,383,713.86
  5. Step 5: Solve for x
    x = 198,383,713.86/21,067.75
  6. Step 6: Final answer
    x = 9,416.46

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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.