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Finding the Fourth Proportional to 18,556.71, 27,792 and 18,418.44

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Solution

The fourth proportional to 18,556.71, 27,792 and 18,418.44 is: 27,584.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.71 : 27,792 = 18,418.44 : x
  2. Step 2: Convert to fraction form
    18,556.71/27,792 = 18,418.44/x
  3. Step 3: Cross multiply
    18,556.71x = 27,792 × 18,418.44
  4. Step 4: Simplify right side
    18,556.71x = 511,885,284.48
  5. Step 5: Solve for x
    x = 511,885,284.48/18,556.71
  6. Step 6: Final answer
    x = 27,584.92

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1.5x scale

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.