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Finding the Fourth Proportional to 18,556.36, 27,838.18 and 6,869.68

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Solution

The fourth proportional to 18,556.36, 27,838.18 and 6,869.68 is: 10,305.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.36 : 27,838.18 = 6,869.68 : x
  2. Step 2: Convert to fraction form
    18,556.36/27,838.18 = 6,869.68/x
  3. Step 3: Cross multiply
    18,556.36x = 27,838.18 × 6,869.68
  4. Step 4: Simplify right side
    18,556.36x = 191,239,388.38
  5. Step 5: Solve for x
    x = 191,239,388.38/18,556.36
  6. Step 6: Final answer
    x = 10,305.87

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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.