Home / 13,218.09-18,241.22-7,249.41

Finding the Fourth Proportional to 13,218.09, 18,241.22 and 7,249.41

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Solution

The fourth proportional to 13,218.09, 18,241.22 and 7,249.41 is: 10,004.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.09 : 18,241.22 = 7,249.41 : x
  2. Step 2: Convert to fraction form
    13,218.09/18,241.22 = 7,249.41/x
  3. Step 3: Cross multiply
    13,218.09x = 18,241.22 × 7,249.41
  4. Step 4: Simplify right side
    13,218.09x = 132,238,082.68
  5. Step 5: Solve for x
    x = 132,238,082.68/13,218.09
  6. Step 6: Final answer
    x = 10,004.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.