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Finding the Fourth Proportional to 18,472.05, 27,717.35 and 8,612.10

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Solution

The fourth proportional to 18,472.05, 27,717.35 and 8,612.10 is: 12,922.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.05 : 27,717.35 = 8,612.10 : x
  2. Step 2: Convert to fraction form
    18,472.05/27,717.35 = 8,612.10/x
  3. Step 3: Cross multiply
    18,472.05x = 27,717.35 × 8,612.10
  4. Step 4: Simplify right side
    18,472.05x = 238,704,546.87
  5. Step 5: Solve for x
    x = 238,704,546.87/18,472.05
  6. Step 6: Final answer
    x = 12,922.47

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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.