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Finding the Fourth Proportional to 21,167.84, 29,213.34 and 11,736.20

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Solution

The fourth proportional to 21,167.84, 29,213.34 and 11,736.20 is: 16,196.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.84 : 29,213.34 = 11,736.20 : x
  2. Step 2: Convert to fraction form
    21,167.84/29,213.34 = 11,736.20/x
  3. Step 3: Cross multiply
    21,167.84x = 29,213.34 × 11,736.20
  4. Step 4: Simplify right side
    21,167.84x = 342,853,600.91
  5. Step 5: Solve for x
    x = 342,853,600.91/21,167.84
  6. Step 6: Final answer
    x = 16,196.91

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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.