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Finding the Fourth Proportional to 12,123.41, 18,185.41 and 3,358.40

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Solution

The fourth proportional to 12,123.41, 18,185.41 and 3,358.40 is: 5,037.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,123.41 : 18,185.41 = 3,358.40 : x
  2. Step 2: Convert to fraction form
    12,123.41/18,185.41 = 3,358.40/x
  3. Step 3: Cross multiply
    12,123.41x = 18,185.41 × 3,358.40
  4. Step 4: Simplify right side
    12,123.41x = 61,073,790.02
  5. Step 5: Solve for x
    x = 61,073,790.02/12,123.41
  6. Step 6: Final answer
    x = 5,037.68

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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.