Home / 13,965.72-20,949.96-4,105.02

Finding the Fourth Proportional to 13,965.72, 20,949.96 and 4,105.02

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Solution

The fourth proportional to 13,965.72, 20,949.96 and 4,105.02 is: 6,157.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.72 : 20,949.96 = 4,105.02 : x
  2. Step 2: Convert to fraction form
    13,965.72/20,949.96 = 4,105.02/x
  3. Step 3: Cross multiply
    13,965.72x = 20,949.96 × 4,105.02
  4. Step 4: Simplify right side
    13,965.72x = 86,000,004.80
  5. Step 5: Solve for x
    x = 86,000,004.80/13,965.72
  6. Step 6: Final answer
    x = 6,157.94

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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.