Home / 12,218.36-18,331.63-3,899.56

Finding the Fourth Proportional to 12,218.36, 18,331.63 and 3,899.56

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Solution

The fourth proportional to 12,218.36, 18,331.63 and 3,899.56 is: 5,850.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.36 : 18,331.63 = 3,899.56 : x
  2. Step 2: Convert to fraction form
    12,218.36/18,331.63 = 3,899.56/x
  3. Step 3: Cross multiply
    12,218.36x = 18,331.63 × 3,899.56
  4. Step 4: Simplify right side
    12,218.36x = 71,485,291.08
  5. Step 5: Solve for x
    x = 71,485,291.08/12,218.36
  6. Step 6: Final answer
    x = 5,850.65

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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.