Home / 13,770.20-20,656.09-3,908.71

Finding the Fourth Proportional to 13,770.20, 20,656.09 and 3,908.71

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Solution

The fourth proportional to 13,770.20, 20,656.09 and 3,908.71 is: 5,863.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.20 : 20,656.09 = 3,908.71 : x
  2. Step 2: Convert to fraction form
    13,770.20/20,656.09 = 3,908.71/x
  3. Step 3: Cross multiply
    13,770.20x = 20,656.09 × 3,908.71
  4. Step 4: Simplify right side
    13,770.20x = 80,738,665.54
  5. Step 5: Solve for x
    x = 80,738,665.54/13,770.20
  6. Step 6: Final answer
    x = 5,863.29

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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.