Home / 13,819.97-20,730.66-3,960.70

Finding the Fourth Proportional to 13,819.97, 20,730.66 and 3,960.70

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Solution

The fourth proportional to 13,819.97, 20,730.66 and 3,960.70 is: 5,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.97 : 20,730.66 = 3,960.70 : x
  2. Step 2: Convert to fraction form
    13,819.97/20,730.66 = 3,960.70/x
  3. Step 3: Cross multiply
    13,819.97x = 20,730.66 × 3,960.70
  4. Step 4: Simplify right side
    13,819.97x = 82,107,925.06
  5. Step 5: Solve for x
    x = 82,107,925.06/13,819.97
  6. Step 6: Final answer
    x = 5,941.25

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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.