Home / 10,919.17-16,379.61-3,900.70

Finding the Fourth Proportional to 10,919.17, 16,379.61 and 3,900.70

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Solution

The fourth proportional to 10,919.17, 16,379.61 and 3,900.70 is: 5,851.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.17 : 16,379.61 = 3,900.70 : x
  2. Step 2: Convert to fraction form
    10,919.17/16,379.61 = 3,900.70/x
  3. Step 3: Cross multiply
    10,919.17x = 16,379.61 × 3,900.70
  4. Step 4: Simplify right side
    10,919.17x = 63,891,944.73
  5. Step 5: Solve for x
    x = 63,891,944.73/10,919.17
  6. Step 6: Final answer
    x = 5,851.36

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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.