Home / 12,211.36-18,316.85-3,891.27

Finding the Fourth Proportional to 12,211.36, 18,316.85 and 3,891.27

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Solution

The fourth proportional to 12,211.36, 18,316.85 and 3,891.27 is: 5,836.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.36 : 18,316.85 = 3,891.27 : x
  2. Step 2: Convert to fraction form
    12,211.36/18,316.85 = 3,891.27/x
  3. Step 3: Cross multiply
    12,211.36x = 18,316.85 × 3,891.27
  4. Step 4: Simplify right side
    12,211.36x = 71,275,720.75
  5. Step 5: Solve for x
    x = 71,275,720.75/12,211.36
  6. Step 6: Final answer
    x = 5,836.84

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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.