Home / 21,553.38-29,743.94-12,121.94

Finding the Fourth Proportional to 21,553.38, 29,743.94 and 12,121.94

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Solution

The fourth proportional to 21,553.38, 29,743.94 and 12,121.94 is: 16,728.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.38 : 29,743.94 = 12,121.94 : x
  2. Step 2: Convert to fraction form
    21,553.38/29,743.94 = 12,121.94/x
  3. Step 3: Cross multiply
    21,553.38x = 29,743.94 × 12,121.94
  4. Step 4: Simplify right side
    21,553.38x = 360,554,269.79
  5. Step 5: Solve for x
    x = 360,554,269.79/21,553.38
  6. Step 6: Final answer
    x = 16,728.43

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1.5x scale

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.