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Finding the Fourth Proportional to 18,591.56, 27,872.76 and 8,725.76

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Solution

The fourth proportional to 18,591.56, 27,872.76 and 8,725.76 is: 13,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.56 : 27,872.76 = 8,725.76 : x
  2. Step 2: Convert to fraction form
    18,591.56/27,872.76 = 8,725.76/x
  3. Step 3: Cross multiply
    18,591.56x = 27,872.76 × 8,725.76
  4. Step 4: Simplify right side
    18,591.56x = 243,211,014.30
  5. Step 5: Solve for x
    x = 243,211,014.30/18,591.56
  6. Step 6: Final answer
    x = 13,081.80

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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.