Home / 13,166.91-18,170.78-7,198.46

Finding the Fourth Proportional to 13,166.91, 18,170.78 and 7,198.46

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Solution

The fourth proportional to 13,166.91, 18,170.78 and 7,198.46 is: 9,934.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.91 : 18,170.78 = 7,198.46 : x
  2. Step 2: Convert to fraction form
    13,166.91/18,170.78 = 7,198.46/x
  3. Step 3: Cross multiply
    13,166.91x = 18,170.78 × 7,198.46
  4. Step 4: Simplify right side
    13,166.91x = 130,801,633.00
  5. Step 5: Solve for x
    x = 130,801,633.00/13,166.91
  6. Step 6: Final answer
    x = 9,934.12

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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.