Home / 10,919.46-16,382.64-3,899.32

Finding the Fourth Proportional to 10,919.46, 16,382.64 and 3,899.32

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Solution

The fourth proportional to 10,919.46, 16,382.64 and 3,899.32 is: 5,850.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.46 : 16,382.64 = 3,899.32 : x
  2. Step 2: Convert to fraction form
    10,919.46/16,382.64 = 3,899.32/x
  3. Step 3: Cross multiply
    10,919.46x = 16,382.64 × 3,899.32
  4. Step 4: Simplify right side
    10,919.46x = 63,881,155.80
  5. Step 5: Solve for x
    x = 63,881,155.80/10,919.46
  6. Step 6: Final answer
    x = 5,850.21

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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.