Home / 10,985.22-16,479.90-3,591.78

Finding the Fourth Proportional to 10,985.22, 16,479.90 and 3,591.78

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Solution

The fourth proportional to 10,985.22, 16,479.90 and 3,591.78 is: 5,388.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.22 : 16,479.90 = 3,591.78 : x
  2. Step 2: Convert to fraction form
    10,985.22/16,479.90 = 3,591.78/x
  3. Step 3: Cross multiply
    10,985.22x = 16,479.90 × 3,591.78
  4. Step 4: Simplify right side
    10,985.22x = 59,192,175.22
  5. Step 5: Solve for x
    x = 59,192,175.22/10,985.22
  6. Step 6: Final answer
    x = 5,388.35

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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.