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Finding the Fourth Proportional to 18,473.64, 27,716.82 and 10,142.98

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Solution

The fourth proportional to 18,473.64, 27,716.82 and 10,142.98 is: 15,217.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473.64 : 27,716.82 = 10,142.98 : x
  2. Step 2: Convert to fraction form
    18,473.64/27,716.82 = 10,142.98/x
  3. Step 3: Cross multiply
    18,473.64x = 27,716.82 × 10,142.98
  4. Step 4: Simplify right side
    18,473.64x = 281,131,150.92
  5. Step 5: Solve for x
    x = 281,131,150.92/18,473.64
  6. Step 6: Final answer
    x = 15,217.96

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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.