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Finding the Fourth Proportional to 18,630.88, 27,933.36 and 6,940.96

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Solution

The fourth proportional to 18,630.88, 27,933.36 and 6,940.96 is: 10,406.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.88 : 27,933.36 = 6,940.96 : x
  2. Step 2: Convert to fraction form
    18,630.88/27,933.36 = 6,940.96/x
  3. Step 3: Cross multiply
    18,630.88x = 27,933.36 × 6,940.96
  4. Step 4: Simplify right side
    18,630.88x = 193,884,334.43
  5. Step 5: Solve for x
    x = 193,884,334.43/18,630.88
  6. Step 6: Final answer
    x = 10,406.61

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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.