Home / 13,249.08-18,272.88-8,209.80

Finding the Fourth Proportional to 13,249.08, 18,272.88 and 8,209.80

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Solution

The fourth proportional to 13,249.08, 18,272.88 and 8,209.80 is: 11,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,249.08 : 18,272.88 = 8,209.80 : x
  2. Step 2: Convert to fraction form
    13,249.08/18,272.88 = 8,209.80/x
  3. Step 3: Cross multiply
    13,249.08x = 18,272.88 × 8,209.80
  4. Step 4: Simplify right side
    13,249.08x = 150,016,690.22
  5. Step 5: Solve for x
    x = 150,016,690.22/13,249.08
  6. Step 6: Final answer
    x = 11,322.80

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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.