Home / 20,543.22-30,811.79-5,751.20

Finding the Fourth Proportional to 20,543.22, 30,811.79 and 5,751.20

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Solution

The fourth proportional to 20,543.22, 30,811.79 and 5,751.20 is: 8,625.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.22 : 30,811.79 = 5,751.20 : x
  2. Step 2: Convert to fraction form
    20,543.22/30,811.79 = 5,751.20/x
  3. Step 3: Cross multiply
    20,543.22x = 30,811.79 × 5,751.20
  4. Step 4: Simplify right side
    20,543.22x = 177,204,858.06
  5. Step 5: Solve for x
    x = 177,204,858.06/20,543.22
  6. Step 6: Final answer
    x = 8,625.95

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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.