Home / 13,896.96-20,847.80-5,131.92

Finding the Fourth Proportional to 13,896.96, 20,847.80 and 5,131.92

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Solution

The fourth proportional to 13,896.96, 20,847.80 and 5,131.92 is: 7,698.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.96 : 20,847.80 = 5,131.92 : x
  2. Step 2: Convert to fraction form
    13,896.96/20,847.80 = 5,131.92/x
  3. Step 3: Cross multiply
    13,896.96x = 20,847.80 × 5,131.92
  4. Step 4: Simplify right side
    13,896.96x = 106,989,241.78
  5. Step 5: Solve for x
    x = 106,989,241.78/13,896.96
  6. Step 6: Final answer
    x = 7,698.75

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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.