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Finding the Fourth Proportional to 18,620.97, 25,694.05 and 11,064.49

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Solution

The fourth proportional to 18,620.97, 25,694.05 and 11,064.49 is: 15,267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.97 : 25,694.05 = 11,064.49 : x
  2. Step 2: Convert to fraction form
    18,620.97/25,694.05 = 11,064.49/x
  3. Step 3: Cross multiply
    18,620.97x = 25,694.05 × 11,064.49
  4. Step 4: Simplify right side
    18,620.97x = 284,291,559.28
  5. Step 5: Solve for x
    x = 284,291,559.28/18,620.97
  6. Step 6: Final answer
    x = 15,267.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.