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Finding the Fourth Proportional to 18,757.44, 28,107 and 7,064.28

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Solution

The fourth proportional to 18,757.44, 28,107 and 7,064.28 is: 10,585.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.44 : 28,107 = 7,064.28 : x
  2. Step 2: Convert to fraction form
    18,757.44/28,107 = 7,064.28/x
  3. Step 3: Cross multiply
    18,757.44x = 28,107 × 7,064.28
  4. Step 4: Simplify right side
    18,757.44x = 198,555,717.96
  5. Step 5: Solve for x
    x = 198,555,717.96/18,757.44
  6. Step 6: Final answer
    x = 10,585.44

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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.