Home / 13,917.75-20,878.56-4,057.74

Finding the Fourth Proportional to 13,917.75, 20,878.56 and 4,057.74

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Solution

The fourth proportional to 13,917.75, 20,878.56 and 4,057.74 is: 6,087.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.75 : 20,878.56 = 4,057.74 : x
  2. Step 2: Convert to fraction form
    13,917.75/20,878.56 = 4,057.74/x
  3. Step 3: Cross multiply
    13,917.75x = 20,878.56 × 4,057.74
  4. Step 4: Simplify right side
    13,917.75x = 84,719,768.05
  5. Step 5: Solve for x
    x = 84,719,768.05/13,917.75
  6. Step 6: Final answer
    x = 6,087.17

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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.