Home / 21,429.57-29,571.17-11,996.85

Finding the Fourth Proportional to 21,429.57, 29,571.17 and 11,996.85

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Solution

The fourth proportional to 21,429.57, 29,571.17 and 11,996.85 is: 16,554.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.57 : 29,571.17 = 11,996.85 : x
  2. Step 2: Convert to fraction form
    21,429.57/29,571.17 = 11,996.85/x
  3. Step 3: Cross multiply
    21,429.57x = 29,571.17 × 11,996.85
  4. Step 4: Simplify right side
    21,429.57x = 354,760,830.83
  5. Step 5: Solve for x
    x = 354,760,830.83/21,429.57
  6. Step 6: Final answer
    x = 16,554.73

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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.