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Finding the Fourth Proportional to 18,551.64, 27,832.12 and 5,404.20

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Solution

The fourth proportional to 18,551.64, 27,832.12 and 5,404.20 is: 8,107.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.64 : 27,832.12 = 5,404.20 : x
  2. Step 2: Convert to fraction form
    18,551.64/27,832.12 = 5,404.20/x
  3. Step 3: Cross multiply
    18,551.64x = 27,832.12 × 5,404.20
  4. Step 4: Simplify right side
    18,551.64x = 150,410,342.90
  5. Step 5: Solve for x
    x = 150,410,342.90/18,551.64
  6. Step 6: Final answer
    x = 8,107.66

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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.