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Finding the Fourth Proportional to 12,972.92, 17,896.10 and 8,504.20

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Solution

The fourth proportional to 12,972.92, 17,896.10 and 8,504.20 is: 11,731.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.92 : 17,896.10 = 8,504.20 : x
  2. Step 2: Convert to fraction form
    12,972.92/17,896.10 = 8,504.20/x
  3. Step 3: Cross multiply
    12,972.92x = 17,896.10 × 8,504.20
  4. Step 4: Simplify right side
    12,972.92x = 152,192,013.62
  5. Step 5: Solve for x
    x = 152,192,013.62/12,972.92
  6. Step 6: Final answer
    x = 11,731.52

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1.5x scale

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.