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Finding the Fourth Proportional to 30,286.59, 41,790.49 and 16,857.49

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Solution

The fourth proportional to 30,286.59, 41,790.49 and 16,857.49 is: 23,260.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,286.59 : 41,790.49 = 16,857.49 : x
  2. Step 2: Convert to fraction form
    30,286.59/41,790.49 = 16,857.49/x
  3. Step 3: Cross multiply
    30,286.59x = 41,790.49 × 16,857.49
  4. Step 4: Simplify right side
    30,286.59x = 704,482,767.27
  5. Step 5: Solve for x
    x = 704,482,767.27/30,286.59
  6. Step 6: Final answer
    x = 23,260.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.