Home / 20,220.32-30,323.82-7,739.84

Finding the Fourth Proportional to 20,220.32, 30,323.82 and 7,739.84

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Solution

The fourth proportional to 20,220.32, 30,323.82 and 7,739.84 is: 11,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.32 : 30,323.82 = 7,739.84 : x
  2. Step 2: Convert to fraction form
    20,220.32/30,323.82 = 7,739.84/x
  3. Step 3: Cross multiply
    20,220.32x = 30,323.82 × 7,739.84
  4. Step 4: Simplify right side
    20,220.32x = 234,701,514.99
  5. Step 5: Solve for x
    x = 234,701,514.99/20,220.32
  6. Step 6: Final answer
    x = 11,607.21

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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.