Home / 10,186.38-15,279.57-7,992.09

Finding the Fourth Proportional to 10,186.38, 15,279.57 and 7,992.09

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Solution

The fourth proportional to 10,186.38, 15,279.57 and 7,992.09 is: 11,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.38 : 15,279.57 = 7,992.09 : x
  2. Step 2: Convert to fraction form
    10,186.38/15,279.57 = 7,992.09/x
  3. Step 3: Cross multiply
    10,186.38x = 15,279.57 × 7,992.09
  4. Step 4: Simplify right side
    10,186.38x = 122,115,698.60
  5. Step 5: Solve for x
    x = 122,115,698.60/10,186.38
  6. Step 6: Final answer
    x = 11,988.14

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.