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Finding the Fourth Proportional to 18,315.71, 27,496 and 12,080.94

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Solution

The fourth proportional to 18,315.71, 27,496 and 12,080.94 is: 18,136.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.71 : 27,496 = 12,080.94 : x
  2. Step 2: Convert to fraction form
    18,315.71/27,496 = 12,080.94/x
  3. Step 3: Cross multiply
    18,315.71x = 27,496 × 12,080.94
  4. Step 4: Simplify right side
    18,315.71x = 332,177,526.24
  5. Step 5: Solve for x
    x = 332,177,526.24/18,315.71
  6. Step 6: Final answer
    x = 18,136.21

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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.