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Finding the Fourth Proportional to 30,279.74, 41,785.72 and 16,850.75

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Solution

The fourth proportional to 30,279.74, 41,785.72 and 16,850.75 is: 23,253.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.74 : 41,785.72 = 16,850.75 : x
  2. Step 2: Convert to fraction form
    30,279.74/41,785.72 = 16,850.75/x
  3. Step 3: Cross multiply
    30,279.74x = 41,785.72 × 16,850.75
  4. Step 4: Simplify right side
    30,279.74x = 704,120,783.63
  5. Step 5: Solve for x
    x = 704,120,783.63/30,279.74
  6. Step 6: Final answer
    x = 23,253.86

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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.