Home / 20,360.43-28,097.89-11,409.86

Finding the Fourth Proportional to 20,360.43, 28,097.89 and 11,409.86

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Solution

The fourth proportional to 20,360.43, 28,097.89 and 11,409.86 is: 15,745.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.43 : 28,097.89 = 11,409.86 : x
  2. Step 2: Convert to fraction form
    20,360.43/28,097.89 = 11,409.86/x
  3. Step 3: Cross multiply
    20,360.43x = 28,097.89 × 11,409.86
  4. Step 4: Simplify right side
    20,360.43x = 320,593,032.92
  5. Step 5: Solve for x
    x = 320,593,032.92/20,360.43
  6. Step 6: Final answer
    x = 15,745.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.