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Finding the Fourth Proportional to 21,043.35, 29,039.79 and 11,611.91

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Solution

The fourth proportional to 21,043.35, 29,039.79 and 11,611.91 is: 16,024.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.35 : 29,039.79 = 11,611.91 : x
  2. Step 2: Convert to fraction form
    21,043.35/29,039.79 = 11,611.91/x
  3. Step 3: Cross multiply
    21,043.35x = 29,039.79 × 11,611.91
  4. Step 4: Simplify right side
    21,043.35x = 337,207,282.70
  5. Step 5: Solve for x
    x = 337,207,282.70/21,043.35
  6. Step 6: Final answer
    x = 16,024.41

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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.