Home / 20,628.42-30,936.84-7,975.26

Finding the Fourth Proportional to 20,628.42, 30,936.84 and 7,975.26

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Solution

The fourth proportional to 20,628.42, 30,936.84 and 7,975.26 is: 11,960.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.42 : 30,936.84 = 7,975.26 : x
  2. Step 2: Convert to fraction form
    20,628.42/30,936.84 = 7,975.26/x
  3. Step 3: Cross multiply
    20,628.42x = 30,936.84 × 7,975.26
  4. Step 4: Simplify right side
    20,628.42x = 246,729,342.58
  5. Step 5: Solve for x
    x = 246,729,342.58/20,628.42
  6. Step 6: Final answer
    x = 11,960.65

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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.