Home / 13,651.20-20,476.79-3,790.47

Finding the Fourth Proportional to 13,651.20, 20,476.79 and 3,790.47

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Solution

The fourth proportional to 13,651.20, 20,476.79 and 3,790.47 is: 5,685.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.20 : 20,476.79 = 3,790.47 : x
  2. Step 2: Convert to fraction form
    13,651.20/20,476.79 = 3,790.47/x
  3. Step 3: Cross multiply
    13,651.20x = 20,476.79 × 3,790.47
  4. Step 4: Simplify right side
    13,651.20x = 77,616,730.24
  5. Step 5: Solve for x
    x = 77,616,730.24/13,651.20
  6. Step 6: Final answer
    x = 5,685.71

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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.