Home / 11,985.82-16,540.46-6,680.53

Finding the Fourth Proportional to 11,985.82, 16,540.46 and 6,680.53

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Solution

The fourth proportional to 11,985.82, 16,540.46 and 6,680.53 is: 9,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.82 : 16,540.46 = 6,680.53 : x
  2. Step 2: Convert to fraction form
    11,985.82/16,540.46 = 6,680.53/x
  3. Step 3: Cross multiply
    11,985.82x = 16,540.46 × 6,680.53
  4. Step 4: Simplify right side
    11,985.82x = 110,499,039.24
  5. Step 5: Solve for x
    x = 110,499,039.24/11,985.82
  6. Step 6: Final answer
    x = 9,219.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.