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Finding the Fourth Proportional to 18,951.57, 26,158.95 and 10,996.97

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Solution

The fourth proportional to 18,951.57, 26,158.95 and 10,996.97 is: 15,179.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.57 : 26,158.95 = 10,996.97 : x
  2. Step 2: Convert to fraction form
    18,951.57/26,158.95 = 10,996.97/x
  3. Step 3: Cross multiply
    18,951.57x = 26,158.95 × 10,996.97
  4. Step 4: Simplify right side
    18,951.57x = 287,669,057.59
  5. Step 5: Solve for x
    x = 287,669,057.59/18,951.57
  6. Step 6: Final answer
    x = 15,179.17

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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.