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Finding the Fourth Proportional to 18,148.91, 27,186.92 and 8,274.61

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Solution

The fourth proportional to 18,148.91, 27,186.92 and 8,274.61 is: 12,395.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,148.91 : 27,186.92 = 8,274.61 : x
  2. Step 2: Convert to fraction form
    18,148.91/27,186.92 = 8,274.61/x
  3. Step 3: Cross multiply
    18,148.91x = 27,186.92 × 8,274.61
  4. Step 4: Simplify right side
    18,148.91x = 224,961,007.54
  5. Step 5: Solve for x
    x = 224,961,007.54/18,148.91
  6. Step 6: Final answer
    x = 12,395.29

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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.