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Finding the Fourth Proportional to 13,257.92, 18,295.92 and 7,289.68

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Solution

The fourth proportional to 13,257.92, 18,295.92 and 7,289.68 is: 10,059.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.92 : 18,295.92 = 7,289.68 : x
  2. Step 2: Convert to fraction form
    13,257.92/18,295.92 = 7,289.68/x
  3. Step 3: Cross multiply
    13,257.92x = 18,295.92 × 7,289.68
  4. Step 4: Simplify right side
    13,257.92x = 133,371,402.11
  5. Step 5: Solve for x
    x = 133,371,402.11/13,257.92
  6. Step 6: Final answer
    x = 10,059.75

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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.