Home / 20,902.32-28,845.54-11,470.86

Finding the Fourth Proportional to 20,902.32, 28,845.54 and 11,470.86

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Solution

The fourth proportional to 20,902.32, 28,845.54 and 11,470.86 is: 15,829.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.32 : 28,845.54 = 11,470.86 : x
  2. Step 2: Convert to fraction form
    20,902.32/28,845.54 = 11,470.86/x
  3. Step 3: Cross multiply
    20,902.32x = 28,845.54 × 11,470.86
  4. Step 4: Simplify right side
    20,902.32x = 330,883,150.96
  5. Step 5: Solve for x
    x = 330,883,150.96/20,902.32
  6. Step 6: Final answer
    x = 15,829.97

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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.