Home / 13,167.39-18,170.46-7,198.86

Finding the Fourth Proportional to 13,167.39, 18,170.46 and 7,198.86

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Solution

The fourth proportional to 13,167.39, 18,170.46 and 7,198.86 is: 9,934.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.39 : 18,170.46 = 7,198.86 : x
  2. Step 2: Convert to fraction form
    13,167.39/18,170.46 = 7,198.86/x
  3. Step 3: Cross multiply
    13,167.39x = 18,170.46 × 7,198.86
  4. Step 4: Simplify right side
    13,167.39x = 130,806,597.68
  5. Step 5: Solve for x
    x = 130,806,597.68/13,167.39
  6. Step 6: Final answer
    x = 9,934.13

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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.