Home / 18,209.88-27,249.80-13,218.03

Finding the Fourth Proportional to 18,209.88, 27,249.80 and 13,218.03

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Solution

The fourth proportional to 18,209.88, 27,249.80 and 13,218.03 is: 19,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,209.88 : 27,249.80 = 13,218.03 : x
  2. Step 2: Convert to fraction form
    18,209.88/27,249.80 = 13,218.03/x
  3. Step 3: Cross multiply
    18,209.88x = 27,249.80 × 13,218.03
  4. Step 4: Simplify right side
    18,209.88x = 360,188,607.80
  5. Step 5: Solve for x
    x = 360,188,607.80/18,209.88
  6. Step 6: Final answer
    x = 19,779.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.