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Finding the Fourth Proportional to 18,614.94, 27,872.63 and 15,662.49

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Solution

The fourth proportional to 18,614.94, 27,872.63 and 15,662.49 is: 23,451.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,614.94 : 27,872.63 = 15,662.49 : x
  2. Step 2: Convert to fraction form
    18,614.94/27,872.63 = 15,662.49/x
  3. Step 3: Cross multiply
    18,614.94x = 27,872.63 × 15,662.49
  4. Step 4: Simplify right side
    18,614.94x = 436,554,710.34
  5. Step 5: Solve for x
    x = 436,554,710.34/18,614.94
  6. Step 6: Final answer
    x = 23,451.85

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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.