Home / 18,828.64-28,236.16-5,676.96

Finding the Fourth Proportional to 18,828.64, 28,236.16 and 5,676.96

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Solution

The fourth proportional to 18,828.64, 28,236.16 and 5,676.96 is: 8,513.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.64 : 28,236.16 = 5,676.96 : x
  2. Step 2: Convert to fraction form
    18,828.64/28,236.16 = 5,676.96/x
  3. Step 3: Cross multiply
    18,828.64x = 28,236.16 × 5,676.96
  4. Step 4: Simplify right side
    18,828.64x = 160,295,550.87
  5. Step 5: Solve for x
    x = 160,295,550.87/18,828.64
  6. Step 6: Final answer
    x = 8,513.39

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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.