Home / 21,223.17-29,288.90-11,791.73

Finding the Fourth Proportional to 21,223.17, 29,288.90 and 11,791.73

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Solution

The fourth proportional to 21,223.17, 29,288.90 and 11,791.73 is: 16,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.17 : 29,288.90 = 11,791.73 : x
  2. Step 2: Convert to fraction form
    21,223.17/29,288.90 = 11,791.73/x
  3. Step 3: Cross multiply
    21,223.17x = 29,288.90 × 11,791.73
  4. Step 4: Simplify right side
    21,223.17x = 345,366,800.80
  5. Step 5: Solve for x
    x = 345,366,800.80/21,223.17
  6. Step 6: Final answer
    x = 16,273.10

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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.