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Finding the Fourth Proportional to 18,361.19, 27,537.62 and 8,991.83

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Solution

The fourth proportional to 18,361.19, 27,537.62 and 8,991.83 is: 13,485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.19 : 27,537.62 = 8,991.83 : x
  2. Step 2: Convert to fraction form
    18,361.19/27,537.62 = 8,991.83/x
  3. Step 3: Cross multiply
    18,361.19x = 27,537.62 × 8,991.83
  4. Step 4: Simplify right side
    18,361.19x = 247,613,415.00
  5. Step 5: Solve for x
    x = 247,613,415.00/18,361.19
  6. Step 6: Final answer
    x = 13,485.70

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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.