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Finding the Fourth Proportional to 18,283.97, 27,431.11 and 5,136.45

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Solution

The fourth proportional to 18,283.97, 27,431.11 and 5,136.45 is: 7,706.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,283.97 : 27,431.11 = 5,136.45 : x
  2. Step 2: Convert to fraction form
    18,283.97/27,431.11 = 5,136.45/x
  3. Step 3: Cross multiply
    18,283.97x = 27,431.11 × 5,136.45
  4. Step 4: Simplify right side
    18,283.97x = 140,898,524.96
  5. Step 5: Solve for x
    x = 140,898,524.96/18,283.97
  6. Step 6: Final answer
    x = 7,706.13

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1.5x scale

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.