Home / 18,145.62-27,218.70-6,458.54

Finding the Fourth Proportional to 18,145.62, 27,218.70 and 6,458.54

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Solution

The fourth proportional to 18,145.62, 27,218.70 and 6,458.54 is: 9,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.62 : 27,218.70 = 6,458.54 : x
  2. Step 2: Convert to fraction form
    18,145.62/27,218.70 = 6,458.54/x
  3. Step 3: Cross multiply
    18,145.62x = 27,218.70 × 6,458.54
  4. Step 4: Simplify right side
    18,145.62x = 175,792,926.60
  5. Step 5: Solve for x
    x = 175,792,926.60/18,145.62
  6. Step 6: Final answer
    x = 9,687.90

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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.