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Finding the Fourth Proportional to 18,378.63, 27,572.81 and 8,524.98

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Solution

The fourth proportional to 18,378.63, 27,572.81 and 8,524.98 is: 12,789.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.63 : 27,572.81 = 8,524.98 : x
  2. Step 2: Convert to fraction form
    18,378.63/27,572.81 = 8,524.98/x
  3. Step 3: Cross multiply
    18,378.63x = 27,572.81 × 8,524.98
  4. Step 4: Simplify right side
    18,378.63x = 235,057,611.17
  5. Step 5: Solve for x
    x = 235,057,611.17/18,378.63
  6. Step 6: Final answer
    x = 12,789.72

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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.