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Finding the Fourth Proportional to 14,249.44, 19,664.28 and 7,961.92

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Solution

The fourth proportional to 14,249.44, 19,664.28 and 7,961.92 is: 10,987.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,249.44 : 19,664.28 = 7,961.92 : x
  2. Step 2: Convert to fraction form
    14,249.44/19,664.28 = 7,961.92/x
  3. Step 3: Cross multiply
    14,249.44x = 19,664.28 × 7,961.92
  4. Step 4: Simplify right side
    14,249.44x = 156,565,424.22
  5. Step 5: Solve for x
    x = 156,565,424.22/14,249.44
  6. Step 6: Final answer
    x = 10,987.48

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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.