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Finding the Fourth Proportional to 18,486.62, 27,734.48 and 7,390.33

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Solution

The fourth proportional to 18,486.62, 27,734.48 and 7,390.33 is: 11,087.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.62 : 27,734.48 = 7,390.33 : x
  2. Step 2: Convert to fraction form
    18,486.62/27,734.48 = 7,390.33/x
  3. Step 3: Cross multiply
    18,486.62x = 27,734.48 × 7,390.33
  4. Step 4: Simplify right side
    18,486.62x = 204,966,959.58
  5. Step 5: Solve for x
    x = 204,966,959.58/18,486.62
  6. Step 6: Final answer
    x = 11,087.31

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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.