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Finding the Fourth Proportional to 18,273.20, 27,361.20 and 11,663.60

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Solution

The fourth proportional to 18,273.20, 27,361.20 and 11,663.60 is: 17,464.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.20 : 27,361.20 = 11,663.60 : x
  2. Step 2: Convert to fraction form
    18,273.20/27,361.20 = 11,663.60/x
  3. Step 3: Cross multiply
    18,273.20x = 27,361.20 × 11,663.60
  4. Step 4: Simplify right side
    18,273.20x = 319,130,092.32
  5. Step 5: Solve for x
    x = 319,130,092.32/18,273.20
  6. Step 6: Final answer
    x = 17,464.38

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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.