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Finding the Fourth Proportional to 18,806.24, 28,192.80 and 7,110.92

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Solution

The fourth proportional to 18,806.24, 28,192.80 and 7,110.92 is: 10,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.24 : 28,192.80 = 7,110.92 : x
  2. Step 2: Convert to fraction form
    18,806.24/28,192.80 = 7,110.92/x
  3. Step 3: Cross multiply
    18,806.24x = 28,192.80 × 7,110.92
  4. Step 4: Simplify right side
    18,806.24x = 200,476,745.38
  5. Step 5: Solve for x
    x = 200,476,745.38/18,806.24
  6. Step 6: Final answer
    x = 10,660.12

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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.