Home / 13,968.55-20,949.89-4,105.15

Finding the Fourth Proportional to 13,968.55, 20,949.89 and 4,105.15

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Solution

The fourth proportional to 13,968.55, 20,949.89 and 4,105.15 is: 6,156.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.55 : 20,949.89 = 4,105.15 : x
  2. Step 2: Convert to fraction form
    13,968.55/20,949.89 = 4,105.15/x
  3. Step 3: Cross multiply
    13,968.55x = 20,949.89 × 4,105.15
  4. Step 4: Simplify right side
    13,968.55x = 86,002,420.41
  5. Step 5: Solve for x
    x = 86,002,420.41/13,968.55
  6. Step 6: Final answer
    x = 6,156.86

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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.