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Finding the Fourth Proportional to 18,419.84, 27,630.74 and 5,940.86

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Solution

The fourth proportional to 18,419.84, 27,630.74 and 5,940.86 is: 8,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.84 : 27,630.74 = 5,940.86 : x
  2. Step 2: Convert to fraction form
    18,419.84/27,630.74 = 5,940.86/x
  3. Step 3: Cross multiply
    18,419.84x = 27,630.74 × 5,940.86
  4. Step 4: Simplify right side
    18,419.84x = 164,150,234.73
  5. Step 5: Solve for x
    x = 164,150,234.73/18,419.84
  6. Step 6: Final answer
    x = 8,911.60

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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.