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Finding the Fourth Proportional to 18,245.77, 27,368.49 and 5,765.79

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Solution

The fourth proportional to 18,245.77, 27,368.49 and 5,765.79 is: 8,648.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.77 : 27,368.49 = 5,765.79 : x
  2. Step 2: Convert to fraction form
    18,245.77/27,368.49 = 5,765.79/x
  3. Step 3: Cross multiply
    18,245.77x = 27,368.49 × 5,765.79
  4. Step 4: Simplify right side
    18,245.77x = 157,801,046.97
  5. Step 5: Solve for x
    x = 157,801,046.97/18,245.77
  6. Step 6: Final answer
    x = 8,648.64

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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.