Home / 13,218.21-18,241.38-7,249.52

Finding the Fourth Proportional to 13,218.21, 18,241.38 and 7,249.52

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Solution

The fourth proportional to 13,218.21, 18,241.38 and 7,249.52 is: 10,004.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.21 : 18,241.38 = 7,249.52 : x
  2. Step 2: Convert to fraction form
    13,218.21/18,241.38 = 7,249.52/x
  3. Step 3: Cross multiply
    13,218.21x = 18,241.38 × 7,249.52
  4. Step 4: Simplify right side
    13,218.21x = 132,241,294.74
  5. Step 5: Solve for x
    x = 132,241,294.74/13,218.21
  6. Step 6: Final answer
    x = 10,004.48

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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.