Home / 13,941.72-20,908.94-5,171.85

Finding the Fourth Proportional to 13,941.72, 20,908.94 and 5,171.85

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Solution

The fourth proportional to 13,941.72, 20,908.94 and 5,171.85 is: 7,756.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.72 : 20,908.94 = 5,171.85 : x
  2. Step 2: Convert to fraction form
    13,941.72/20,908.94 = 5,171.85/x
  3. Step 3: Cross multiply
    13,941.72x = 20,908.94 × 5,171.85
  4. Step 4: Simplify right side
    13,941.72x = 108,137,875.48
  5. Step 5: Solve for x
    x = 108,137,875.48/13,941.72
  6. Step 6: Final answer
    x = 7,756.42

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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.