Home / 13,218.29-18,241.45-7,249.85

Finding the Fourth Proportional to 13,218.29, 18,241.45 and 7,249.85

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Solution

The fourth proportional to 13,218.29, 18,241.45 and 7,249.85 is: 10,004.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.29 : 18,241.45 = 7,249.85 : x
  2. Step 2: Convert to fraction form
    13,218.29/18,241.45 = 7,249.85/x
  3. Step 3: Cross multiply
    13,218.29x = 18,241.45 × 7,249.85
  4. Step 4: Simplify right side
    13,218.29x = 132,247,878.74
  5. Step 5: Solve for x
    x = 132,247,878.74/13,218.29
  6. Step 6: Final answer
    x = 10,004.92

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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.