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Finding the Fourth Proportional to 18,427.70, 27,645.60 and 5,945.60

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Solution

The fourth proportional to 18,427.70, 27,645.60 and 5,945.60 is: 8,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.70 : 27,645.60 = 5,945.60 : x
  2. Step 2: Convert to fraction form
    18,427.70/27,645.60 = 5,945.60/x
  3. Step 3: Cross multiply
    18,427.70x = 27,645.60 × 5,945.60
  4. Step 4: Simplify right side
    18,427.70x = 164,369,679.36
  5. Step 5: Solve for x
    x = 164,369,679.36/18,427.70
  6. Step 6: Final answer
    x = 8,919.71

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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.