Home / 20,132.42-30,198.65-7,649.51

Finding the Fourth Proportional to 20,132.42, 30,198.65 and 7,649.51

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Solution

The fourth proportional to 20,132.42, 30,198.65 and 7,649.51 is: 11,474.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.42 : 30,198.65 = 7,649.51 : x
  2. Step 2: Convert to fraction form
    20,132.42/30,198.65 = 7,649.51/x
  3. Step 3: Cross multiply
    20,132.42x = 30,198.65 × 7,649.51
  4. Step 4: Simplify right side
    20,132.42x = 231,004,685.92
  5. Step 5: Solve for x
    x = 231,004,685.92/20,132.42
  6. Step 6: Final answer
    x = 11,474.27

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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.