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Finding the Fourth Proportional to 18,412.85, 27,608.19 and 8,279.37

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Solution

The fourth proportional to 18,412.85, 27,608.19 and 8,279.37 is: 12,414.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.85 : 27,608.19 = 8,279.37 : x
  2. Step 2: Convert to fraction form
    18,412.85/27,608.19 = 8,279.37/x
  3. Step 3: Cross multiply
    18,412.85x = 27,608.19 × 8,279.37
  4. Step 4: Simplify right side
    18,412.85x = 228,578,388.99
  5. Step 5: Solve for x
    x = 228,578,388.99/18,412.85
  6. Step 6: Final answer
    x = 12,414.07

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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.