Home / 18,917.96-28,375.88-5,769.29

Finding the Fourth Proportional to 18,917.96, 28,375.88 and 5,769.29

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Solution

The fourth proportional to 18,917.96, 28,375.88 and 5,769.29 is: 8,653.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.96 : 28,375.88 = 5,769.29 : x
  2. Step 2: Convert to fraction form
    18,917.96/28,375.88 = 5,769.29/x
  3. Step 3: Cross multiply
    18,917.96x = 28,375.88 × 5,769.29
  4. Step 4: Simplify right side
    18,917.96x = 163,708,722.82
  5. Step 5: Solve for x
    x = 163,708,722.82/18,917.96
  6. Step 6: Final answer
    x = 8,653.62

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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.