Home / 21,222.86-29,288.46-11,791.43

Finding the Fourth Proportional to 21,222.86, 29,288.46 and 11,791.43

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Solution

The fourth proportional to 21,222.86, 29,288.46 and 11,791.43 is: 16,272.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.86 : 29,288.46 = 11,791.43 : x
  2. Step 2: Convert to fraction form
    21,222.86/29,288.46 = 11,791.43/x
  3. Step 3: Cross multiply
    21,222.86x = 29,288.46 × 11,791.43
  4. Step 4: Simplify right side
    21,222.86x = 345,352,679.46
  5. Step 5: Solve for x
    x = 345,352,679.46/21,222.86
  6. Step 6: Final answer
    x = 16,272.68

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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.