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Finding the Fourth Proportional to 15,891.67, 23,811.58 and 8,089.75

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Solution

The fourth proportional to 15,891.67, 23,811.58 and 8,089.75 is: 12,121.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.67 : 23,811.58 = 8,089.75 : x
  2. Step 2: Convert to fraction form
    15,891.67/23,811.58 = 8,089.75/x
  3. Step 3: Cross multiply
    15,891.67x = 23,811.58 × 8,089.75
  4. Step 4: Simplify right side
    15,891.67x = 192,629,729.31
  5. Step 5: Solve for x
    x = 192,629,729.31/15,891.67
  6. Step 6: Final answer
    x = 12,121.43

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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.