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Finding the Fourth Proportional to 18,571.98, 27,868.92 and 8,711.34

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Solution

The fourth proportional to 18,571.98, 27,868.92 and 8,711.34 is: 13,072.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.98 : 27,868.92 = 8,711.34 : x
  2. Step 2: Convert to fraction form
    18,571.98/27,868.92 = 8,711.34/x
  3. Step 3: Cross multiply
    18,571.98x = 27,868.92 × 8,711.34
  4. Step 4: Simplify right side
    18,571.98x = 242,775,637.55
  5. Step 5: Solve for x
    x = 242,775,637.55/18,571.98
  6. Step 6: Final answer
    x = 13,072.15

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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.