Home / 20,512.24-30,768.35-4,929.86

Finding the Fourth Proportional to 20,512.24, 30,768.35 and 4,929.86

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Solution

The fourth proportional to 20,512.24, 30,768.35 and 4,929.86 is: 7,394.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.24 : 30,768.35 = 4,929.86 : x
  2. Step 2: Convert to fraction form
    20,512.24/30,768.35 = 4,929.86/x
  3. Step 3: Cross multiply
    20,512.24x = 30,768.35 × 4,929.86
  4. Step 4: Simplify right side
    20,512.24x = 151,683,657.93
  5. Step 5: Solve for x
    x = 151,683,657.93/20,512.24
  6. Step 6: Final answer
    x = 7,394.79

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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.