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Finding the Fourth Proportional to 15,186.88, 20,951.04 and 8,896.60

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Solution

The fourth proportional to 15,186.88, 20,951.04 and 8,896.60 is: 12,273.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.88 : 20,951.04 = 8,896.60 : x
  2. Step 2: Convert to fraction form
    15,186.88/20,951.04 = 8,896.60/x
  3. Step 3: Cross multiply
    15,186.88x = 20,951.04 × 8,896.60
  4. Step 4: Simplify right side
    15,186.88x = 186,393,022.46
  5. Step 5: Solve for x
    x = 186,393,022.46/15,186.88
  6. Step 6: Final answer
    x = 12,273.29

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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.