Home / 18,380.88-25,365.87-9,997.38

Finding the Fourth Proportional to 18,380.88, 25,365.87 and 9,997.38

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Solution

The fourth proportional to 18,380.88, 25,365.87 and 9,997.38 is: 13,796.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.88 : 25,365.87 = 9,997.38 : x
  2. Step 2: Convert to fraction form
    18,380.88/25,365.87 = 9,997.38/x
  3. Step 3: Cross multiply
    18,380.88x = 25,365.87 × 9,997.38
  4. Step 4: Simplify right side
    18,380.88x = 253,592,241.42
  5. Step 5: Solve for x
    x = 253,592,241.42/18,380.88
  6. Step 6: Final answer
    x = 13,796.52

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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.