Home / 10,941.20-16,401.96-3,920

Finding the Fourth Proportional to 10,941.20, 16,401.96 and 3,920

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Solution

The fourth proportional to 10,941.20, 16,401.96 and 3,920 is: 5,876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,941.20 : 16,401.96 = 3,920 : x
  2. Step 2: Convert to fraction form
    10,941.20/16,401.96 = 3,920/x
  3. Step 3: Cross multiply
    10,941.20x = 16,401.96 × 3,920
  4. Step 4: Simplify right side
    10,941.20x = 64,295,683.20
  5. Step 5: Solve for x
    x = 64,295,683.20/10,941.20
  6. Step 6: Final answer
    x = 5,876.47

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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.