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Finding the Fourth Proportional to 18,806.30, 28,227.07 and 9,928.22

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Solution

The fourth proportional to 18,806.30, 28,227.07 and 9,928.22 is: 14,901.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.30 : 28,227.07 = 9,928.22 : x
  2. Step 2: Convert to fraction form
    18,806.30/28,227.07 = 9,928.22/x
  3. Step 3: Cross multiply
    18,806.30x = 28,227.07 × 9,928.22
  4. Step 4: Simplify right side
    18,806.30x = 280,244,560.92
  5. Step 5: Solve for x
    x = 280,244,560.92/18,806.30
  6. Step 6: Final answer
    x = 14,901.63

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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.