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Finding the Fourth Proportional to 15,578.46, 23,367.67 and 3,891.69

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Solution

The fourth proportional to 15,578.46, 23,367.67 and 3,891.69 is: 5,837.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.46 : 23,367.67 = 3,891.69 : x
  2. Step 2: Convert to fraction form
    15,578.46/23,367.67 = 3,891.69/x
  3. Step 3: Cross multiply
    15,578.46x = 23,367.67 × 3,891.69
  4. Step 4: Simplify right side
    15,578.46x = 90,939,717.93
  5. Step 5: Solve for x
    x = 90,939,717.93/15,578.46
  6. Step 6: Final answer
    x = 5,837.53

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.