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Finding the Fourth Proportional to 18,571.59, 27,857.52 and 5,433.12

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Solution

The fourth proportional to 18,571.59, 27,857.52 and 5,433.12 is: 8,149.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.59 : 27,857.52 = 5,433.12 : x
  2. Step 2: Convert to fraction form
    18,571.59/27,857.52 = 5,433.12/x
  3. Step 3: Cross multiply
    18,571.59x = 27,857.52 × 5,433.12
  4. Step 4: Simplify right side
    18,571.59x = 151,353,249.06
  5. Step 5: Solve for x
    x = 151,353,249.06/18,571.59
  6. Step 6: Final answer
    x = 8,149.72

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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.