Home / 13,218.60-18,241.92-7,249.92

Finding the Fourth Proportional to 13,218.60, 18,241.92 and 7,249.92

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Solution

The fourth proportional to 13,218.60, 18,241.92 and 7,249.92 is: 10,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.60 : 18,241.92 = 7,249.92 : x
  2. Step 2: Convert to fraction form
    13,218.60/18,241.92 = 7,249.92/x
  3. Step 3: Cross multiply
    13,218.60x = 18,241.92 × 7,249.92
  4. Step 4: Simplify right side
    13,218.60x = 132,252,460.65
  5. Step 5: Solve for x
    x = 132,252,460.65/13,218.60
  6. Step 6: Final answer
    x = 10,005.03

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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.