Home / 13,166.55-18,169.65-7,198.07

Finding the Fourth Proportional to 13,166.55, 18,169.65 and 7,198.07

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Solution

The fourth proportional to 13,166.55, 18,169.65 and 7,198.07 is: 9,933.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.55 : 18,169.65 = 7,198.07 : x
  2. Step 2: Convert to fraction form
    13,166.55/18,169.65 = 7,198.07/x
  3. Step 3: Cross multiply
    13,166.55x = 18,169.65 × 7,198.07
  4. Step 4: Simplify right side
    13,166.55x = 130,786,321.73
  5. Step 5: Solve for x
    x = 130,786,321.73/13,166.55
  6. Step 6: Final answer
    x = 9,933.23

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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.