Home / 15,261.48-20,879.55-15,195.96

Finding the Fourth Proportional to 15,261.48, 20,879.55 and 15,195.96

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Solution

The fourth proportional to 15,261.48, 20,879.55 and 15,195.96 is: 20,789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.48 : 20,879.55 = 15,195.96 : x
  2. Step 2: Convert to fraction form
    15,261.48/20,879.55 = 15,195.96/x
  3. Step 3: Cross multiply
    15,261.48x = 20,879.55 × 15,195.96
  4. Step 4: Simplify right side
    15,261.48x = 317,284,806.62
  5. Step 5: Solve for x
    x = 317,284,806.62/15,261.48
  6. Step 6: Final answer
    x = 20,789.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.