Home / 10,920.75-16,376.96-3,899.45

Finding the Fourth Proportional to 10,920.75, 16,376.96 and 3,899.45

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Solution

The fourth proportional to 10,920.75, 16,376.96 and 3,899.45 is: 5,847.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.75 : 16,376.96 = 3,899.45 : x
  2. Step 2: Convert to fraction form
    10,920.75/16,376.96 = 3,899.45/x
  3. Step 3: Cross multiply
    10,920.75x = 16,376.96 × 3,899.45
  4. Step 4: Simplify right side
    10,920.75x = 63,861,187.36
  5. Step 5: Solve for x
    x = 63,861,187.36/10,920.75
  6. Step 6: Final answer
    x = 5,847.69

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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.