Home / 13,187.92-18,198.61-7,218.43

Finding the Fourth Proportional to 13,187.92, 18,198.61 and 7,218.43

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Solution

The fourth proportional to 13,187.92, 18,198.61 and 7,218.43 is: 9,961.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.92 : 18,198.61 = 7,218.43 : x
  2. Step 2: Convert to fraction form
    13,187.92/18,198.61 = 7,218.43/x
  3. Step 3: Cross multiply
    13,187.92x = 18,198.61 × 7,218.43
  4. Step 4: Simplify right side
    13,187.92x = 131,365,392.38
  5. Step 5: Solve for x
    x = 131,365,392.38/13,187.92
  6. Step 6: Final answer
    x = 9,961.04

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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.