Home / 20,163.55-30,241.37-19,163.38

Finding the Fourth Proportional to 20,163.55, 30,241.37 and 19,163.38

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Solution

The fourth proportional to 20,163.55, 30,241.37 and 19,163.38 is: 28,741.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.55 : 30,241.37 = 19,163.38 : x
  2. Step 2: Convert to fraction form
    20,163.55/30,241.37 = 19,163.38/x
  3. Step 3: Cross multiply
    20,163.55x = 30,241.37 × 19,163.38
  4. Step 4: Simplify right side
    20,163.55x = 579,526,837.34
  5. Step 5: Solve for x
    x = 579,526,837.34/20,163.55
  6. Step 6: Final answer
    x = 28,741.31

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1.5x scale

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.