Home / 10,912.12-16,374.77-3,891.60

Finding the Fourth Proportional to 10,912.12, 16,374.77 and 3,891.60

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Solution

The fourth proportional to 10,912.12, 16,374.77 and 3,891.60 is: 5,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.12 : 16,374.77 = 3,891.60 : x
  2. Step 2: Convert to fraction form
    10,912.12/16,374.77 = 3,891.60/x
  3. Step 3: Cross multiply
    10,912.12x = 16,374.77 × 3,891.60
  4. Step 4: Simplify right side
    10,912.12x = 63,724,054.93
  5. Step 5: Solve for x
    x = 63,724,054.93/10,912.12
  6. Step 6: Final answer
    x = 5,839.75

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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.