Home / 13,917.50-20,879.70-4,056.86

Finding the Fourth Proportional to 13,917.50, 20,879.70 and 4,056.86

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Solution

The fourth proportional to 13,917.50, 20,879.70 and 4,056.86 is: 6,086.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.50 : 20,879.70 = 4,056.86 : x
  2. Step 2: Convert to fraction form
    13,917.50/20,879.70 = 4,056.86/x
  3. Step 3: Cross multiply
    13,917.50x = 20,879.70 × 4,056.86
  4. Step 4: Simplify right side
    13,917.50x = 84,705,895.06
  5. Step 5: Solve for x
    x = 84,705,895.06/13,917.50
  6. Step 6: Final answer
    x = 6,086.29

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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.