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Finding the Fourth Proportional to 12,639.65, 17,448.62 and 7,333.54

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Solution

The fourth proportional to 12,639.65, 17,448.62 and 7,333.54 is: 10,123.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.65 : 17,448.62 = 7,333.54 : x
  2. Step 2: Convert to fraction form
    12,639.65/17,448.62 = 7,333.54/x
  3. Step 3: Cross multiply
    12,639.65x = 17,448.62 × 7,333.54
  4. Step 4: Simplify right side
    12,639.65x = 127,960,072.43
  5. Step 5: Solve for x
    x = 127,960,072.43/12,639.65
  6. Step 6: Final answer
    x = 10,123.71

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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.