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Finding the Fourth Proportional to 18,575.17, 27,870.05 and 8,179.63

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Solution

The fourth proportional to 18,575.17, 27,870.05 and 8,179.63 is: 12,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.17 : 27,870.05 = 8,179.63 : x
  2. Step 2: Convert to fraction form
    18,575.17/27,870.05 = 8,179.63/x
  3. Step 3: Cross multiply
    18,575.17x = 27,870.05 × 8,179.63
  4. Step 4: Simplify right side
    18,575.17x = 227,966,516.83
  5. Step 5: Solve for x
    x = 227,966,516.83/18,575.17
  6. Step 6: Final answer
    x = 12,272.65

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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.