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Finding the Fourth Proportional to 18,367.56, 27,554.88 and 7,837.40

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Solution

The fourth proportional to 18,367.56, 27,554.88 and 7,837.40 is: 11,757.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.56 : 27,554.88 = 7,837.40 : x
  2. Step 2: Convert to fraction form
    18,367.56/27,554.88 = 7,837.40/x
  3. Step 3: Cross multiply
    18,367.56x = 27,554.88 × 7,837.40
  4. Step 4: Simplify right side
    18,367.56x = 215,958,616.51
  5. Step 5: Solve for x
    x = 215,958,616.51/18,367.56
  6. Step 6: Final answer
    x = 11,757.61

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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.