Home / 10,780.21-16,170.32-3,385.24

Finding the Fourth Proportional to 10,780.21, 16,170.32 and 3,385.24

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Solution

The fourth proportional to 10,780.21, 16,170.32 and 3,385.24 is: 5,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.21 : 16,170.32 = 3,385.24 : x
  2. Step 2: Convert to fraction form
    10,780.21/16,170.32 = 3,385.24/x
  3. Step 3: Cross multiply
    10,780.21x = 16,170.32 × 3,385.24
  4. Step 4: Simplify right side
    10,780.21x = 54,740,414.08
  5. Step 5: Solve for x
    x = 54,740,414.08/10,780.21
  6. Step 6: Final answer
    x = 5,077.86

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Similar ratio
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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.