Home / 13,819.72-20,730.29-3,960.45

Finding the Fourth Proportional to 13,819.72, 20,730.29 and 3,960.45

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Solution

The fourth proportional to 13,819.72, 20,730.29 and 3,960.45 is: 5,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.72 : 20,730.29 = 3,960.45 : x
  2. Step 2: Convert to fraction form
    13,819.72/20,730.29 = 3,960.45/x
  3. Step 3: Cross multiply
    13,819.72x = 20,730.29 × 3,960.45
  4. Step 4: Simplify right side
    13,819.72x = 82,101,153.58
  5. Step 5: Solve for x
    x = 82,101,153.58/13,819.72
  6. Step 6: Final answer
    x = 5,940.87

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1.5x scale

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.