Home / 18,917.91-28,394.37-9,564.57

Finding the Fourth Proportional to 18,917.91, 28,394.37 and 9,564.57

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Solution

The fourth proportional to 18,917.91, 28,394.37 and 9,564.57 is: 14,355.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.91 : 28,394.37 = 9,564.57 : x
  2. Step 2: Convert to fraction form
    18,917.91/28,394.37 = 9,564.57/x
  3. Step 3: Cross multiply
    18,917.91x = 28,394.37 × 9,564.57
  4. Step 4: Simplify right side
    18,917.91x = 271,579,939.47
  5. Step 5: Solve for x
    x = 271,579,939.47/18,917.91
  6. Step 6: Final answer
    x = 14,355.71

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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.