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Finding the Fourth Proportional to 28,942.34, 43,374.31 and 18,395.53

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Solution

The fourth proportional to 28,942.34, 43,374.31 and 18,395.53 is: 27,568.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942.34 : 43,374.31 = 18,395.53 : x
  2. Step 2: Convert to fraction form
    28,942.34/43,374.31 = 18,395.53/x
  3. Step 3: Cross multiply
    28,942.34x = 43,374.31 × 18,395.53
  4. Step 4: Simplify right side
    28,942.34x = 797,893,266.41
  5. Step 5: Solve for x
    x = 797,893,266.41/28,942.34
  6. Step 6: Final answer
    x = 27,568.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.