Home / 18,380.61-25,365.83-9,997.11

Finding the Fourth Proportional to 18,380.61, 25,365.83 and 9,997.11

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Solution

The fourth proportional to 18,380.61, 25,365.83 and 9,997.11 is: 13,796.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.61 : 25,365.83 = 9,997.11 : x
  2. Step 2: Convert to fraction form
    18,380.61/25,365.83 = 9,997.11/x
  3. Step 3: Cross multiply
    18,380.61x = 25,365.83 × 9,997.11
  4. Step 4: Simplify right side
    18,380.61x = 253,584,942.77
  5. Step 5: Solve for x
    x = 253,584,942.77/18,380.61
  6. Step 6: Final answer
    x = 13,796.33

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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.