Home / 21,024.42-31,517.66-7,687.94

Finding the Fourth Proportional to 21,024.42, 31,517.66 and 7,687.94

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Solution

The fourth proportional to 21,024.42, 31,517.66 and 7,687.94 is: 11,524.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.42 : 31,517.66 = 7,687.94 : x
  2. Step 2: Convert to fraction form
    21,024.42/31,517.66 = 7,687.94/x
  3. Step 3: Cross multiply
    21,024.42x = 31,517.66 × 7,687.94
  4. Step 4: Simplify right side
    21,024.42x = 242,305,879.02
  5. Step 5: Solve for x
    x = 242,305,879.02/21,024.42
  6. Step 6: Final answer
    x = 11,524.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.