Home / 13,218.34-18,241.56-7,249.66

Finding the Fourth Proportional to 13,218.34, 18,241.56 and 7,249.66

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Solution

The fourth proportional to 13,218.34, 18,241.56 and 7,249.66 is: 10,004.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.34 : 18,241.56 = 7,249.66 : x
  2. Step 2: Convert to fraction form
    13,218.34/18,241.56 = 7,249.66/x
  3. Step 3: Cross multiply
    13,218.34x = 18,241.56 × 7,249.66
  4. Step 4: Simplify right side
    13,218.34x = 132,245,107.87
  5. Step 5: Solve for x
    x = 132,245,107.87/13,218.34
  6. Step 6: Final answer
    x = 10,004.67

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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.