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Finding the Fourth Proportional to 17,997.28, 26,988 and 8,136.16

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Solution

The fourth proportional to 17,997.28, 26,988 and 8,136.16 is: 12,200.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,997.28 : 26,988 = 8,136.16 : x
  2. Step 2: Convert to fraction form
    17,997.28/26,988 = 8,136.16/x
  3. Step 3: Cross multiply
    17,997.28x = 26,988 × 8,136.16
  4. Step 4: Simplify right side
    17,997.28x = 219,578,686.08
  5. Step 5: Solve for x
    x = 219,578,686.08/17,997.28
  6. Step 6: Final answer
    x = 12,200.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.