Home / 10,755.20-16,132.80-2,857.70

Finding the Fourth Proportional to 10,755.20, 16,132.80 and 2,857.70

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Solution

The fourth proportional to 10,755.20, 16,132.80 and 2,857.70 is: 4,286.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,755.20 : 16,132.80 = 2,857.70 : x
  2. Step 2: Convert to fraction form
    10,755.20/16,132.80 = 2,857.70/x
  3. Step 3: Cross multiply
    10,755.20x = 16,132.80 × 2,857.70
  4. Step 4: Simplify right side
    10,755.20x = 46,102,702.56
  5. Step 5: Solve for x
    x = 46,102,702.56/10,755.20
  6. Step 6: Final answer
    x = 4,286.55

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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.