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Finding the Fourth Proportional to 18,383.67, 27,584.61 and 7,290.12

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Solution

The fourth proportional to 18,383.67, 27,584.61 and 7,290.12 is: 10,938.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.67 : 27,584.61 = 7,290.12 : x
  2. Step 2: Convert to fraction form
    18,383.67/27,584.61 = 7,290.12/x
  3. Step 3: Cross multiply
    18,383.67x = 27,584.61 × 7,290.12
  4. Step 4: Simplify right side
    18,383.67x = 201,095,117.05
  5. Step 5: Solve for x
    x = 201,095,117.05/18,383.67
  6. Step 6: Final answer
    x = 10,938.79

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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.