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Finding the Fourth Proportional to 21,049.74, 29,048.49 and 11,618.31

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Solution

The fourth proportional to 21,049.74, 29,048.49 and 11,618.31 is: 16,033.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.74 : 29,048.49 = 11,618.31 : x
  2. Step 2: Convert to fraction form
    21,049.74/29,048.49 = 11,618.31/x
  3. Step 3: Cross multiply
    21,049.74x = 29,048.49 × 11,618.31
  4. Step 4: Simplify right side
    21,049.74x = 337,494,361.85
  5. Step 5: Solve for x
    x = 337,494,361.85/21,049.74
  6. Step 6: Final answer
    x = 16,033.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.