Home / 13,646.56-20,469.84-3,785.62

Finding the Fourth Proportional to 13,646.56, 20,469.84 and 3,785.62

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Solution

The fourth proportional to 13,646.56, 20,469.84 and 3,785.62 is: 5,678.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,646.56 : 20,469.84 = 3,785.62 : x
  2. Step 2: Convert to fraction form
    13,646.56/20,469.84 = 3,785.62/x
  3. Step 3: Cross multiply
    13,646.56x = 20,469.84 × 3,785.62
  4. Step 4: Simplify right side
    13,646.56x = 77,491,035.70
  5. Step 5: Solve for x
    x = 77,491,035.70/13,646.56
  6. Step 6: Final answer
    x = 5,678.43

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Similar ratio
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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.