Home / 21,262.44-31,879.22-11,908.88

Finding the Fourth Proportional to 21,262.44, 31,879.22 and 11,908.88

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Solution

The fourth proportional to 21,262.44, 31,879.22 and 11,908.88 is: 17,855.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.44 : 31,879.22 = 11,908.88 : x
  2. Step 2: Convert to fraction form
    21,262.44/31,879.22 = 11,908.88/x
  3. Step 3: Cross multiply
    21,262.44x = 31,879.22 × 11,908.88
  4. Step 4: Simplify right side
    21,262.44x = 379,645,805.47
  5. Step 5: Solve for x
    x = 379,645,805.47/21,262.44
  6. Step 6: Final answer
    x = 17,855.23

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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.