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Finding the Fourth Proportional to 19,286.67, 28,928.19 and 6,806.19

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Solution

The fourth proportional to 19,286.67, 28,928.19 and 6,806.19 is: 10,208.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.67 : 28,928.19 = 6,806.19 : x
  2. Step 2: Convert to fraction form
    19,286.67/28,928.19 = 6,806.19/x
  3. Step 3: Cross multiply
    19,286.67x = 28,928.19 × 6,806.19
  4. Step 4: Simplify right side
    19,286.67x = 196,890,757.50
  5. Step 5: Solve for x
    x = 196,890,757.50/19,286.67
  6. Step 6: Final answer
    x = 10,208.64

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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.