Home / 13,198.12-18,206.50-8,160.73

Finding the Fourth Proportional to 13,198.12, 18,206.50 and 8,160.73

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Solution

The fourth proportional to 13,198.12, 18,206.50 and 8,160.73 is: 11,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.12 : 18,206.50 = 8,160.73 : x
  2. Step 2: Convert to fraction form
    13,198.12/18,206.50 = 8,160.73/x
  3. Step 3: Cross multiply
    13,198.12x = 18,206.50 × 8,160.73
  4. Step 4: Simplify right side
    13,198.12x = 148,578,198.91
  5. Step 5: Solve for x
    x = 148,578,198.91/13,198.12
  6. Step 6: Final answer
    x = 11,257.53

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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.