Home / 10,816.12-16,220.94-3,889

Finding the Fourth Proportional to 10,816.12, 16,220.94 and 3,889

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Solution

The fourth proportional to 10,816.12, 16,220.94 and 3,889 is: 5,832.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,816.12 : 16,220.94 = 3,889 : x
  2. Step 2: Convert to fraction form
    10,816.12/16,220.94 = 3,889/x
  3. Step 3: Cross multiply
    10,816.12x = 16,220.94 × 3,889
  4. Step 4: Simplify right side
    10,816.12x = 63,083,235.66
  5. Step 5: Solve for x
    x = 63,083,235.66/10,816.12
  6. Step 6: Final answer
    x = 5,832.34

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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.