Home / 20,388.41-30,575.27-7,057.78

Finding the Fourth Proportional to 20,388.41, 30,575.27 and 7,057.78

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Solution

The fourth proportional to 20,388.41, 30,575.27 and 7,057.78 is: 10,584.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.41 : 30,575.27 = 7,057.78 : x
  2. Step 2: Convert to fraction form
    20,388.41/30,575.27 = 7,057.78/x
  3. Step 3: Cross multiply
    20,388.41x = 30,575.27 × 7,057.78
  4. Step 4: Simplify right side
    20,388.41x = 215,793,470.31
  5. Step 5: Solve for x
    x = 215,793,470.31/20,388.41
  6. Step 6: Final answer
    x = 10,584.13

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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.