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Finding the Fourth Proportional to 18,464.13, 25,480.50 and 11,394.63

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Solution

The fourth proportional to 18,464.13, 25,480.50 and 11,394.63 is: 15,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,464.13 : 25,480.50 = 11,394.63 : x
  2. Step 2: Convert to fraction form
    18,464.13/25,480.50 = 11,394.63/x
  3. Step 3: Cross multiply
    18,464.13x = 25,480.50 × 11,394.63
  4. Step 4: Simplify right side
    18,464.13x = 290,340,869.72
  5. Step 5: Solve for x
    x = 290,340,869.72/18,464.13
  6. Step 6: Final answer
    x = 15,724.59

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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.