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Finding the Fourth Proportional to 12,357, 18,537.42 and 4,150.92

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Solution

The fourth proportional to 12,357, 18,537.42 and 4,150.92 is: 6,227.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357 : 18,537.42 = 4,150.92 : x
  2. Step 2: Convert to fraction form
    12,357/18,537.42 = 4,150.92/x
  3. Step 3: Cross multiply
    12,357x = 18,537.42 × 4,150.92
  4. Step 4: Simplify right side
    12,357x = 76,947,347.43
  5. Step 5: Solve for x
    x = 76,947,347.43/12,357
  6. Step 6: Final answer
    x = 6,227.02

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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.