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Finding the Fourth Proportional to 18,168.26, 27,196.20 and 15,511.46

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Solution

The fourth proportional to 18,168.26, 27,196.20 and 15,511.46 is: 23,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168.26 : 27,196.20 = 15,511.46 : x
  2. Step 2: Convert to fraction form
    18,168.26/27,196.20 = 15,511.46/x
  3. Step 3: Cross multiply
    18,168.26x = 27,196.20 × 15,511.46
  4. Step 4: Simplify right side
    18,168.26x = 421,852,768.45
  5. Step 5: Solve for x
    x = 421,852,768.45/18,168.26
  6. Step 6: Final answer
    x = 23,219.22

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.