Home / 21,553.44-29,743.68-12,121.92

Finding the Fourth Proportional to 21,553.44, 29,743.68 and 12,121.92

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Solution

The fourth proportional to 21,553.44, 29,743.68 and 12,121.92 is: 16,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.44 : 29,743.68 = 12,121.92 : x
  2. Step 2: Convert to fraction form
    21,553.44/29,743.68 = 12,121.92/x
  3. Step 3: Cross multiply
    21,553.44x = 29,743.68 × 12,121.92
  4. Step 4: Simplify right side
    21,553.44x = 360,550,509.47
  5. Step 5: Solve for x
    x = 360,550,509.47/21,553.44
  6. Step 6: Final answer
    x = 16,728.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.