Home / 21,222.72-29,287.62-11,791.26

Finding the Fourth Proportional to 21,222.72, 29,287.62 and 11,791.26

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Solution

The fourth proportional to 21,222.72, 29,287.62 and 11,791.26 is: 16,272.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.72 : 29,287.62 = 11,791.26 : x
  2. Step 2: Convert to fraction form
    21,222.72/29,287.62 = 11,791.26/x
  3. Step 3: Cross multiply
    21,222.72x = 29,287.62 × 11,791.26
  4. Step 4: Simplify right side
    21,222.72x = 345,337,942.20
  5. Step 5: Solve for x
    x = 345,337,942.20/21,222.72
  6. Step 6: Final answer
    x = 16,272.09

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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.