Home / 13,392.54-20,029.68-8,112.96

Finding the Fourth Proportional to 13,392.54, 20,029.68 and 8,112.96

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Solution

The fourth proportional to 13,392.54, 20,029.68 and 8,112.96 is: 12,133.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.54 : 20,029.68 = 8,112.96 : x
  2. Step 2: Convert to fraction form
    13,392.54/20,029.68 = 8,112.96/x
  3. Step 3: Cross multiply
    13,392.54x = 20,029.68 × 8,112.96
  4. Step 4: Simplify right side
    13,392.54x = 162,499,992.65
  5. Step 5: Solve for x
    x = 162,499,992.65/13,392.54
  6. Step 6: Final answer
    x = 12,133.62

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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.