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Finding the Fourth Proportional to 15,147.89, 22,723.04 and 5,286.95

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Solution

The fourth proportional to 15,147.89, 22,723.04 and 5,286.95 is: 7,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.89 : 22,723.04 = 5,286.95 : x
  2. Step 2: Convert to fraction form
    15,147.89/22,723.04 = 5,286.95/x
  3. Step 3: Cross multiply
    15,147.89x = 22,723.04 × 5,286.95
  4. Step 4: Simplify right side
    15,147.89x = 120,135,475.93
  5. Step 5: Solve for x
    x = 120,135,475.93/15,147.89
  6. Step 6: Final answer
    x = 7,930.84

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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.