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Finding the Fourth Proportional to 21,231.35, 29,299.41 and 11,671.41

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Solution

The fourth proportional to 21,231.35, 29,299.41 and 11,671.41 is: 16,106.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.35 : 29,299.41 = 11,671.41 : x
  2. Step 2: Convert to fraction form
    21,231.35/29,299.41 = 11,671.41/x
  3. Step 3: Cross multiply
    21,231.35x = 29,299.41 × 11,671.41
  4. Step 4: Simplify right side
    21,231.35x = 341,965,426.87
  5. Step 5: Solve for x
    x = 341,965,426.87/21,231.35
  6. Step 6: Final answer
    x = 16,106.63

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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.