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Finding the Fourth Proportional to 18,162, 25,065.60 and 10,995.87

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Solution

The fourth proportional to 18,162, 25,065.60 and 10,995.87 is: 15,175.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,162 : 25,065.60 = 10,995.87 : x
  2. Step 2: Convert to fraction form
    18,162/25,065.60 = 10,995.87/x
  3. Step 3: Cross multiply
    18,162x = 25,065.60 × 10,995.87
  4. Step 4: Simplify right side
    18,162x = 275,618,079.07
  5. Step 5: Solve for x
    x = 275,618,079.07/18,162
  6. Step 6: Final answer
    x = 15,175.54

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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.