Home / 21,198.72-31,797.12-8,723.52

Finding the Fourth Proportional to 21,198.72, 31,797.12 and 8,723.52

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Solution

The fourth proportional to 21,198.72, 31,797.12 and 8,723.52 is: 13,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.72 : 31,797.12 = 8,723.52 : x
  2. Step 2: Convert to fraction form
    21,198.72/31,797.12 = 8,723.52/x
  3. Step 3: Cross multiply
    21,198.72x = 31,797.12 × 8,723.52
  4. Step 4: Simplify right side
    21,198.72x = 277,382,812.26
  5. Step 5: Solve for x
    x = 277,382,812.26/21,198.72
  6. Step 6: Final answer
    x = 13,084.88

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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.