Home / 13,847.72-20,738.45-7,986.56

Finding the Fourth Proportional to 13,847.72, 20,738.45 and 7,986.56

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Solution

The fourth proportional to 13,847.72, 20,738.45 and 7,986.56 is: 11,960.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,847.72 : 20,738.45 = 7,986.56 : x
  2. Step 2: Convert to fraction form
    13,847.72/20,738.45 = 7,986.56/x
  3. Step 3: Cross multiply
    13,847.72x = 20,738.45 × 7,986.56
  4. Step 4: Simplify right side
    13,847.72x = 165,628,731.61
  5. Step 5: Solve for x
    x = 165,628,731.61/13,847.72
  6. Step 6: Final answer
    x = 11,960.73

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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.