Home / 20,489.82-30,712.05-8,007.54

Finding the Fourth Proportional to 20,489.82, 30,712.05 and 8,007.54

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Solution

The fourth proportional to 20,489.82, 30,712.05 and 8,007.54 is: 12,002.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.82 : 30,712.05 = 8,007.54 : x
  2. Step 2: Convert to fraction form
    20,489.82/30,712.05 = 8,007.54/x
  3. Step 3: Cross multiply
    20,489.82x = 30,712.05 × 8,007.54
  4. Step 4: Simplify right side
    20,489.82x = 245,927,968.86
  5. Step 5: Solve for x
    x = 245,927,968.86/20,489.82
  6. Step 6: Final answer
    x = 12,002.45

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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.