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Finding the Fourth Proportional to 18,664.70, 27,997.05 and 8,276.45

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Solution

The fourth proportional to 18,664.70, 27,997.05 and 8,276.45 is: 12,414.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.70 : 27,997.05 = 8,276.45 : x
  2. Step 2: Convert to fraction form
    18,664.70/27,997.05 = 8,276.45/x
  3. Step 3: Cross multiply
    18,664.70x = 27,997.05 × 8,276.45
  4. Step 4: Simplify right side
    18,664.70x = 231,716,184.47
  5. Step 5: Solve for x
    x = 231,716,184.47/18,664.70
  6. Step 6: Final answer
    x = 12,414.68

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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.