Home / 10,936.20-16,404.30-6,780.90

Finding the Fourth Proportional to 10,936.20, 16,404.30 and 6,780.90

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Solution

The fourth proportional to 10,936.20, 16,404.30 and 6,780.90 is: 10,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,936.20 : 16,404.30 = 6,780.90 : x
  2. Step 2: Convert to fraction form
    10,936.20/16,404.30 = 6,780.90/x
  3. Step 3: Cross multiply
    10,936.20x = 16,404.30 × 6,780.90
  4. Step 4: Simplify right side
    10,936.20x = 111,235,917.87
  5. Step 5: Solve for x
    x = 111,235,917.87/10,936.20
  6. Step 6: Final answer
    x = 10,171.35

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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.