Home / 20,998.37-28,975.11-11,567.54

Finding the Fourth Proportional to 20,998.37, 28,975.11 and 11,567.54

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Solution

The fourth proportional to 20,998.37, 28,975.11 and 11,567.54 is: 15,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.37 : 28,975.11 = 11,567.54 : x
  2. Step 2: Convert to fraction form
    20,998.37/28,975.11 = 11,567.54/x
  3. Step 3: Cross multiply
    20,998.37x = 28,975.11 × 11,567.54
  4. Step 4: Simplify right side
    20,998.37x = 335,170,743.93
  5. Step 5: Solve for x
    x = 335,170,743.93/20,998.37
  6. Step 6: Final answer
    x = 15,961.75

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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.