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Finding the Fourth Proportional to 18,889.97, 26,069.03 and 10,930.64

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Solution

The fourth proportional to 18,889.97, 26,069.03 and 10,930.64 is: 15,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.97 : 26,069.03 = 10,930.64 : x
  2. Step 2: Convert to fraction form
    18,889.97/26,069.03 = 10,930.64/x
  3. Step 3: Cross multiply
    18,889.97x = 26,069.03 × 10,930.64
  4. Step 4: Simplify right side
    18,889.97x = 284,950,997.08
  5. Step 5: Solve for x
    x = 284,950,997.08/18,889.97
  6. Step 6: Final answer
    x = 15,084.78

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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.