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Finding the Fourth Proportional to 10,936.80, 15,092.78 and 5,968.80

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Solution

The fourth proportional to 10,936.80, 15,092.78 and 5,968.80 is: 8,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,936.80 : 15,092.78 = 5,968.80 : x
  2. Step 2: Convert to fraction form
    10,936.80/15,092.78 = 5,968.80/x
  3. Step 3: Cross multiply
    10,936.80x = 15,092.78 × 5,968.80
  4. Step 4: Simplify right side
    10,936.80x = 90,085,785.26
  5. Step 5: Solve for x
    x = 90,085,785.26/10,936.80
  6. Step 6: Final answer
    x = 8,236.94

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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.