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Finding the Fourth Proportional to 18,551.79, 27,864.27 and 15,940.62

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Solution

The fourth proportional to 18,551.79, 27,864.27 and 15,940.62 is: 23,942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.79 : 27,864.27 = 15,940.62 : x
  2. Step 2: Convert to fraction form
    18,551.79/27,864.27 = 15,940.62/x
  3. Step 3: Cross multiply
    18,551.79x = 27,864.27 × 15,940.62
  4. Step 4: Simplify right side
    18,551.79x = 444,173,739.65
  5. Step 5: Solve for x
    x = 444,173,739.65/18,551.79
  6. Step 6: Final answer
    x = 23,942.37

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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.