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Finding the Fourth Proportional to 18,377.72, 25,361.52 and 9,994.22

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Solution

The fourth proportional to 18,377.72, 25,361.52 and 9,994.22 is: 13,792.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,377.72 : 25,361.52 = 9,994.22 : x
  2. Step 2: Convert to fraction form
    18,377.72/25,361.52 = 9,994.22/x
  3. Step 3: Cross multiply
    18,377.72x = 25,361.52 × 9,994.22
  4. Step 4: Simplify right side
    18,377.72x = 253,468,610.41
  5. Step 5: Solve for x
    x = 253,468,610.41/18,377.72
  6. Step 6: Final answer
    x = 13,792.17

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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.