Home / 21,628.09-32,427.15-8,481.79

Finding the Fourth Proportional to 21,628.09, 32,427.15 and 8,481.79

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Solution

The fourth proportional to 21,628.09, 32,427.15 and 8,481.79 is: 12,716.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.09 : 32,427.15 = 8,481.79 : x
  2. Step 2: Convert to fraction form
    21,628.09/32,427.15 = 8,481.79/x
  3. Step 3: Cross multiply
    21,628.09x = 32,427.15 × 8,481.79
  4. Step 4: Simplify right side
    21,628.09x = 275,040,276.60
  5. Step 5: Solve for x
    x = 275,040,276.60/21,628.09
  6. Step 6: Final answer
    x = 12,716.81

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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.