Home / 13,218.32-18,241.18-7,249.88

Finding the Fourth Proportional to 13,218.32, 18,241.18 and 7,249.88

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Solution

The fourth proportional to 13,218.32, 18,241.18 and 7,249.88 is: 10,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.32 : 18,241.18 = 7,249.88 : x
  2. Step 2: Convert to fraction form
    13,218.32/18,241.18 = 7,249.88/x
  3. Step 3: Cross multiply
    13,218.32x = 18,241.18 × 7,249.88
  4. Step 4: Simplify right side
    13,218.32x = 132,246,329.81
  5. Step 5: Solve for x
    x = 132,246,329.81/13,218.32
  6. Step 6: Final answer
    x = 10,004.78

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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.