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Finding the Fourth Proportional to 16,719.14, 25,078.71 and 7,960.21

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Solution

The fourth proportional to 16,719.14, 25,078.71 and 7,960.21 is: 11,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,719.14 : 25,078.71 = 7,960.21 : x
  2. Step 2: Convert to fraction form
    16,719.14/25,078.71 = 7,960.21/x
  3. Step 3: Cross multiply
    16,719.14x = 25,078.71 × 7,960.21
  4. Step 4: Simplify right side
    16,719.14x = 199,631,765.28
  5. Step 5: Solve for x
    x = 199,631,765.28/16,719.14
  6. Step 6: Final answer
    x = 11,940.31

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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.