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Finding the Fourth Proportional to 18,361.60, 27,537.60 and 5,212.48

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Solution

The fourth proportional to 18,361.60, 27,537.60 and 5,212.48 is: 7,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.60 : 27,537.60 = 5,212.48 : x
  2. Step 2: Convert to fraction form
    18,361.60/27,537.60 = 5,212.48/x
  3. Step 3: Cross multiply
    18,361.60x = 27,537.60 × 5,212.48
  4. Step 4: Simplify right side
    18,361.60x = 143,539,189.25
  5. Step 5: Solve for x
    x = 143,539,189.25/18,361.60
  6. Step 6: Final answer
    x = 7,817.36

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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.