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Finding the Fourth Proportional to 18,171.20, 27,256.96 and 5,027.60

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Solution

The fourth proportional to 18,171.20, 27,256.96 and 5,027.60 is: 7,541.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,171.20 : 27,256.96 = 5,027.60 : x
  2. Step 2: Convert to fraction form
    18,171.20/27,256.96 = 5,027.60/x
  3. Step 3: Cross multiply
    18,171.20x = 27,256.96 × 5,027.60
  4. Step 4: Simplify right side
    18,171.20x = 137,037,092.10
  5. Step 5: Solve for x
    x = 137,037,092.10/18,171.20
  6. Step 6: Final answer
    x = 7,541.44

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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.