Home / 13,218.54-18,241.44-7,249.92

Finding the Fourth Proportional to 13,218.54, 18,241.44 and 7,249.92

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Solution

The fourth proportional to 13,218.54, 18,241.44 and 7,249.92 is: 10,004.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.54 : 18,241.44 = 7,249.92 : x
  2. Step 2: Convert to fraction form
    13,218.54/18,241.44 = 7,249.92/x
  3. Step 3: Cross multiply
    13,218.54x = 18,241.44 × 7,249.92
  4. Step 4: Simplify right side
    13,218.54x = 132,248,980.68
  5. Step 5: Solve for x
    x = 132,248,980.68/13,218.54
  6. Step 6: Final answer
    x = 10,004.81

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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.