Home / 15,028.85-20,739.83-8,222.96

Finding the Fourth Proportional to 15,028.85, 20,739.83 and 8,222.96

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Solution

The fourth proportional to 15,028.85, 20,739.83 and 8,222.96 is: 11,347.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,028.85 : 20,739.83 = 8,222.96 : x
  2. Step 2: Convert to fraction form
    15,028.85/20,739.83 = 8,222.96/x
  3. Step 3: Cross multiply
    15,028.85x = 20,739.83 × 8,222.96
  4. Step 4: Simplify right side
    15,028.85x = 170,542,647.68
  5. Step 5: Solve for x
    x = 170,542,647.68/15,028.85
  6. Step 6: Final answer
    x = 11,347.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.