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Finding the Fourth Proportional to 27,321.78, 40,982.72 and 7,600.36

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Solution

The fourth proportional to 27,321.78, 40,982.72 and 7,600.36 is: 11,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,321.78 : 40,982.72 = 7,600.36 : x
  2. Step 2: Convert to fraction form
    27,321.78/40,982.72 = 7,600.36/x
  3. Step 3: Cross multiply
    27,321.78x = 40,982.72 × 7,600.36
  4. Step 4: Simplify right side
    27,321.78x = 311,483,425.78
  5. Step 5: Solve for x
    x = 311,483,425.78/27,321.78
  6. Step 6: Final answer
    x = 11,400.55

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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.