Home / 12,211.42-18,316.11-3,891.10

Finding the Fourth Proportional to 12,211.42, 18,316.11 and 3,891.10

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Solution

The fourth proportional to 12,211.42, 18,316.11 and 3,891.10 is: 5,836.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.42 : 18,316.11 = 3,891.10 : x
  2. Step 2: Convert to fraction form
    12,211.42/18,316.11 = 3,891.10/x
  3. Step 3: Cross multiply
    12,211.42x = 18,316.11 × 3,891.10
  4. Step 4: Simplify right side
    12,211.42x = 71,269,815.62
  5. Step 5: Solve for x
    x = 71,269,815.62/12,211.42
  6. Step 6: Final answer
    x = 5,836.32

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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.