Home / 20,076.86-30,103.14-8,981.48

Finding the Fourth Proportional to 20,076.86, 30,103.14 and 8,981.48

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Solution

The fourth proportional to 20,076.86, 30,103.14 and 8,981.48 is: 13,466.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.86 : 30,103.14 = 8,981.48 : x
  2. Step 2: Convert to fraction form
    20,076.86/30,103.14 = 8,981.48/x
  3. Step 3: Cross multiply
    20,076.86x = 30,103.14 × 8,981.48
  4. Step 4: Simplify right side
    20,076.86x = 270,370,858.79
  5. Step 5: Solve for x
    x = 270,370,858.79/20,076.86
  6. Step 6: Final answer
    x = 13,466.79

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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.