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Finding the Fourth Proportional to 18,551.97, 27,795.56 and 15,451.90

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Solution

The fourth proportional to 18,551.97, 27,795.56 and 15,451.90 is: 23,150.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.97 : 27,795.56 = 15,451.90 : x
  2. Step 2: Convert to fraction form
    18,551.97/27,795.56 = 15,451.90/x
  3. Step 3: Cross multiply
    18,551.97x = 27,795.56 × 15,451.90
  4. Step 4: Simplify right side
    18,551.97x = 429,494,066.82
  5. Step 5: Solve for x
    x = 429,494,066.82/18,551.97
  6. Step 6: Final answer
    x = 23,150.86

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Why These Related Problems?

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