Home / 13,896.75-20,839.81-6,874.36

Finding the Fourth Proportional to 13,896.75, 20,839.81 and 6,874.36

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Solution

The fourth proportional to 13,896.75, 20,839.81 and 6,874.36 is: 10,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.75 : 20,839.81 = 6,874.36 : x
  2. Step 2: Convert to fraction form
    13,896.75/20,839.81 = 6,874.36/x
  3. Step 3: Cross multiply
    13,896.75x = 20,839.81 × 6,874.36
  4. Step 4: Simplify right side
    13,896.75x = 143,260,356.27
  5. Step 5: Solve for x
    x = 143,260,356.27/13,896.75
  6. Step 6: Final answer
    x = 10,308.91

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1.5x scale

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.