Home / 13,186.46-18,197.24-7,218.02

Finding the Fourth Proportional to 13,186.46, 18,197.24 and 7,218.02

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Solution

The fourth proportional to 13,186.46, 18,197.24 and 7,218.02 is: 9,960.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.46 : 18,197.24 = 7,218.02 : x
  2. Step 2: Convert to fraction form
    13,186.46/18,197.24 = 7,218.02/x
  3. Step 3: Cross multiply
    13,186.46x = 18,197.24 × 7,218.02
  4. Step 4: Simplify right side
    13,186.46x = 131,348,042.26
  5. Step 5: Solve for x
    x = 131,348,042.26/13,186.46
  6. Step 6: Final answer
    x = 9,960.83

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Half scale
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Double scale
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Similar ratio
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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.