Home / 13,180.20-19,770.78-3,946.92

Finding the Fourth Proportional to 13,180.20, 19,770.78 and 3,946.92

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Solution

The fourth proportional to 13,180.20, 19,770.78 and 3,946.92 is: 5,920.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.20 : 19,770.78 = 3,946.92 : x
  2. Step 2: Convert to fraction form
    13,180.20/19,770.78 = 3,946.92/x
  3. Step 3: Cross multiply
    13,180.20x = 19,770.78 × 3,946.92
  4. Step 4: Simplify right side
    13,180.20x = 78,033,687.00
  5. Step 5: Solve for x
    x = 78,033,687.00/13,180.20
  6. Step 6: Final answer
    x = 5,920.52

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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.