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Finding the Fourth Proportional to 23,391.92, 32,280.32 and 12,781.62

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Solution

The fourth proportional to 23,391.92, 32,280.32 and 12,781.62 is: 17,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,391.92 : 32,280.32 = 12,781.62 : x
  2. Step 2: Convert to fraction form
    23,391.92/32,280.32 = 12,781.62/x
  3. Step 3: Cross multiply
    23,391.92x = 32,280.32 × 12,781.62
  4. Step 4: Simplify right side
    23,391.92x = 412,594,815.67
  5. Step 5: Solve for x
    x = 412,594,815.67/23,391.92
  6. Step 6: Final answer
    x = 17,638.35

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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.