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Finding the Fourth Proportional to 22,880.61, 31,572.59 and 12,809.61

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Solution

The fourth proportional to 22,880.61, 31,572.59 and 12,809.61 is: 17,675.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,880.61 : 31,572.59 = 12,809.61 : x
  2. Step 2: Convert to fraction form
    22,880.61/31,572.59 = 12,809.61/x
  3. Step 3: Cross multiply
    22,880.61x = 31,572.59 × 12,809.61
  4. Step 4: Simplify right side
    22,880.61x = 404,432,500.54
  5. Step 5: Solve for x
    x = 404,432,500.54/22,880.61
  6. Step 6: Final answer
    x = 17,675.77

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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.