Home / 20,144.07-30,211.53-7,659.66

Finding the Fourth Proportional to 20,144.07, 30,211.53 and 7,659.66

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Solution

The fourth proportional to 20,144.07, 30,211.53 and 7,659.66 is: 11,487.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.07 : 30,211.53 = 7,659.66 : x
  2. Step 2: Convert to fraction form
    20,144.07/30,211.53 = 7,659.66/x
  3. Step 3: Cross multiply
    20,144.07x = 30,211.53 × 7,659.66
  4. Step 4: Simplify right side
    20,144.07x = 231,410,047.88
  5. Step 5: Solve for x
    x = 231,410,047.88/20,144.07
  6. Step 6: Final answer
    x = 11,487.75

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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.