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Finding the Fourth Proportional to 13,329.98, 18,395.16 and 7,361.66

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Solution

The fourth proportional to 13,329.98, 18,395.16 and 7,361.66 is: 10,158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,329.98 : 18,395.16 = 7,361.66 : x
  2. Step 2: Convert to fraction form
    13,329.98/18,395.16 = 7,361.66/x
  3. Step 3: Cross multiply
    13,329.98x = 18,395.16 × 7,361.66
  4. Step 4: Simplify right side
    13,329.98x = 135,418,913.57
  5. Step 5: Solve for x
    x = 135,418,913.57/13,329.98
  6. Step 6: Final answer
    x = 10,158.97

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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.