Home / 20,131.28-30,202.13-7,651.52

Finding the Fourth Proportional to 20,131.28, 30,202.13 and 7,651.52

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Solution

The fourth proportional to 20,131.28, 30,202.13 and 7,651.52 is: 11,479.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.28 : 30,202.13 = 7,651.52 : x
  2. Step 2: Convert to fraction form
    20,131.28/30,202.13 = 7,651.52/x
  3. Step 3: Cross multiply
    20,131.28x = 30,202.13 × 7,651.52
  4. Step 4: Simplify right side
    20,131.28x = 231,092,201.74
  5. Step 5: Solve for x
    x = 231,092,201.74/20,131.28
  6. Step 6: Final answer
    x = 11,479.26

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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.