Home / 8,186.18-12,279.37-6,553.11

Finding the Fourth Proportional to 8,186.18, 12,279.37 and 6,553.11

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Solution

The fourth proportional to 8,186.18, 12,279.37 and 6,553.11 is: 9,829.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.18 : 12,279.37 = 6,553.11 : x
  2. Step 2: Convert to fraction form
    8,186.18/12,279.37 = 6,553.11/x
  3. Step 3: Cross multiply
    8,186.18x = 12,279.37 × 6,553.11
  4. Step 4: Simplify right side
    8,186.18x = 80,468,045.96
  5. Step 5: Solve for x
    x = 80,468,045.96/8,186.18
  6. Step 6: Final answer
    x = 9,829.74

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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.