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Finding the Fourth Proportional to 21,163.71, 29,208.02 and 11,734.10

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Solution

The fourth proportional to 21,163.71, 29,208.02 and 11,734.10 is: 16,194.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.71 : 29,208.02 = 11,734.10 : x
  2. Step 2: Convert to fraction form
    21,163.71/29,208.02 = 11,734.10/x
  3. Step 3: Cross multiply
    21,163.71x = 29,208.02 × 11,734.10
  4. Step 4: Simplify right side
    21,163.71x = 342,729,622.77
  5. Step 5: Solve for x
    x = 342,729,622.77/21,163.71
  6. Step 6: Final answer
    x = 16,194.21

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Why These Related Problems?

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