Home / 21,721.92-32,584.78-6,139.55

Finding the Fourth Proportional to 21,721.92, 32,584.78 and 6,139.55

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Solution

The fourth proportional to 21,721.92, 32,584.78 and 6,139.55 is: 9,209.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,721.92 : 32,584.78 = 6,139.55 : x
  2. Step 2: Convert to fraction form
    21,721.92/32,584.78 = 6,139.55/x
  3. Step 3: Cross multiply
    21,721.92x = 32,584.78 × 6,139.55
  4. Step 4: Simplify right side
    21,721.92x = 200,055,791.90
  5. Step 5: Solve for x
    x = 200,055,791.90/21,721.92
  6. Step 6: Final answer
    x = 9,209.86

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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.