Home / 10,991.10-16,486.80-3,976.14

Finding the Fourth Proportional to 10,991.10, 16,486.80 and 3,976.14

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Solution

The fourth proportional to 10,991.10, 16,486.80 and 3,976.14 is: 5,964.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.10 : 16,486.80 = 3,976.14 : x
  2. Step 2: Convert to fraction form
    10,991.10/16,486.80 = 3,976.14/x
  3. Step 3: Cross multiply
    10,991.10x = 16,486.80 × 3,976.14
  4. Step 4: Simplify right side
    10,991.10x = 65,553,824.95
  5. Step 5: Solve for x
    x = 65,553,824.95/10,991.10
  6. Step 6: Final answer
    x = 5,964.26

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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.