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Finding the Fourth Proportional to 18,552.78, 27,829.20 and 6,240.78

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Solution

The fourth proportional to 18,552.78, 27,829.20 and 6,240.78 is: 9,361.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,552.78 : 27,829.20 = 6,240.78 : x
  2. Step 2: Convert to fraction form
    18,552.78/27,829.20 = 6,240.78/x
  3. Step 3: Cross multiply
    18,552.78x = 27,829.20 × 6,240.78
  4. Step 4: Simplify right side
    18,552.78x = 173,675,914.78
  5. Step 5: Solve for x
    x = 173,675,914.78/18,552.78
  6. Step 6: Final answer
    x = 9,361.18

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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.