Home / 21,200.94-31,789.26-6,405.48

Finding the Fourth Proportional to 21,200.94, 31,789.26 and 6,405.48

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Solution

The fourth proportional to 21,200.94, 31,789.26 and 6,405.48 is: 9,604.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.94 : 31,789.26 = 6,405.48 : x
  2. Step 2: Convert to fraction form
    21,200.94/31,789.26 = 6,405.48/x
  3. Step 3: Cross multiply
    21,200.94x = 31,789.26 × 6,405.48
  4. Step 4: Simplify right side
    21,200.94x = 203,625,469.14
  5. Step 5: Solve for x
    x = 203,625,469.14/21,200.94
  6. Step 6: Final answer
    x = 9,604.55

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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.