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Finding the Fourth Proportional to 18,255.78, 27,383.76 and 5,775.30

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Solution

The fourth proportional to 18,255.78, 27,383.76 and 5,775.30 is: 8,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.78 : 27,383.76 = 5,775.30 : x
  2. Step 2: Convert to fraction form
    18,255.78/27,383.76 = 5,775.30/x
  3. Step 3: Cross multiply
    18,255.78x = 27,383.76 × 5,775.30
  4. Step 4: Simplify right side
    18,255.78x = 158,149,429.13
  5. Step 5: Solve for x
    x = 158,149,429.13/18,255.78
  6. Step 6: Final answer
    x = 8,662.98

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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.