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Finding the Fourth Proportional to 12,661.43, 18,964.07 and 10,190.03

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Solution

The fourth proportional to 12,661.43, 18,964.07 and 10,190.03 is: 15,262.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.43 : 18,964.07 = 10,190.03 : x
  2. Step 2: Convert to fraction form
    12,661.43/18,964.07 = 10,190.03/x
  3. Step 3: Cross multiply
    12,661.43x = 18,964.07 × 10,190.03
  4. Step 4: Simplify right side
    12,661.43x = 193,244,391.27
  5. Step 5: Solve for x
    x = 193,244,391.27/12,661.43
  6. Step 6: Final answer
    x = 15,262.45

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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.