Home / 20,221.88-30,313.62-7,065.68

Finding the Fourth Proportional to 20,221.88, 30,313.62 and 7,065.68

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Solution

The fourth proportional to 20,221.88, 30,313.62 and 7,065.68 is: 10,591.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.88 : 30,313.62 = 7,065.68 : x
  2. Step 2: Convert to fraction form
    20,221.88/30,313.62 = 7,065.68/x
  3. Step 3: Cross multiply
    20,221.88x = 30,313.62 × 7,065.68
  4. Step 4: Simplify right side
    20,221.88x = 214,186,338.56
  5. Step 5: Solve for x
    x = 214,186,338.56/20,221.88
  6. Step 6: Final answer
    x = 10,591.81

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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.