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Finding the Fourth Proportional to 20,388.33, 30,575.16 and 7,057.71

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Solution

The fourth proportional to 20,388.33, 30,575.16 and 7,057.71 is: 10,584.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.33 : 30,575.16 = 7,057.71 : x
  2. Step 2: Convert to fraction form
    20,388.33/30,575.16 = 7,057.71/x
  3. Step 3: Cross multiply
    20,388.33x = 30,575.16 × 7,057.71
  4. Step 4: Simplify right side
    20,388.33x = 215,790,459.61
  5. Step 5: Solve for x
    x = 215,790,459.61/20,388.33
  6. Step 6: Final answer
    x = 10,584.02

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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.