Home / 13,513.82-20,270.78-7,960.56

Finding the Fourth Proportional to 13,513.82, 20,270.78 and 7,960.56

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Solution

The fourth proportional to 13,513.82, 20,270.78 and 7,960.56 is: 11,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.82 : 20,270.78 = 7,960.56 : x
  2. Step 2: Convert to fraction form
    13,513.82/20,270.78 = 7,960.56/x
  3. Step 3: Cross multiply
    13,513.82x = 20,270.78 × 7,960.56
  4. Step 4: Simplify right side
    13,513.82x = 161,366,720.63
  5. Step 5: Solve for x
    x = 161,366,720.63/13,513.82
  6. Step 6: Final answer
    x = 11,940.87

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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.