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Finding the Fourth Proportional to 15,052.44, 20,772.32 and 8,679

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Solution

The fourth proportional to 15,052.44, 20,772.32 and 8,679 is: 11,976.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,052.44 : 20,772.32 = 8,679 : x
  2. Step 2: Convert to fraction form
    15,052.44/20,772.32 = 8,679/x
  3. Step 3: Cross multiply
    15,052.44x = 20,772.32 × 8,679
  4. Step 4: Simplify right side
    15,052.44x = 180,282,921.89
  5. Step 5: Solve for x
    x = 180,282,921.89/15,052.44
  6. Step 6: Final answer
    x = 11,976.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.