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Finding the Fourth Proportional to 18,231.93, 27,397.31 and 9,918.09

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Solution

The fourth proportional to 18,231.93, 27,397.31 and 9,918.09 is: 14,904.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.93 : 27,397.31 = 9,918.09 : x
  2. Step 2: Convert to fraction form
    18,231.93/27,397.31 = 9,918.09/x
  3. Step 3: Cross multiply
    18,231.93x = 27,397.31 × 9,918.09
  4. Step 4: Simplify right side
    18,231.93x = 271,728,936.75
  5. Step 5: Solve for x
    x = 271,728,936.75/18,231.93
  6. Step 6: Final answer
    x = 14,904.01

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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.