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Finding the Fourth Proportional to 18,575.72, 27,873.16 and 12,340.04

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Solution

The fourth proportional to 18,575.72, 27,873.16 and 12,340.04 is: 18,516.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.72 : 27,873.16 = 12,340.04 : x
  2. Step 2: Convert to fraction form
    18,575.72/27,873.16 = 12,340.04/x
  3. Step 3: Cross multiply
    18,575.72x = 27,873.16 × 12,340.04
  4. Step 4: Simplify right side
    18,575.72x = 343,955,909.33
  5. Step 5: Solve for x
    x = 343,955,909.33/18,575.72
  6. Step 6: Final answer
    x = 18,516.42

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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.