Home / 20,414.71-28,175.38-12,461.56

Finding the Fourth Proportional to 20,414.71, 28,175.38 and 12,461.56

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Solution

The fourth proportional to 20,414.71, 28,175.38 and 12,461.56 is: 17,198.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.71 : 28,175.38 = 12,461.56 : x
  2. Step 2: Convert to fraction form
    20,414.71/28,175.38 = 12,461.56/x
  3. Step 3: Cross multiply
    20,414.71x = 28,175.38 × 12,461.56
  4. Step 4: Simplify right side
    20,414.71x = 351,109,188.39
  5. Step 5: Solve for x
    x = 351,109,188.39/20,414.71
  6. Step 6: Final answer
    x = 17,198.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.