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Finding the Fourth Proportional to 18,561.56, 27,843.75 and 6,874.88

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Solution

The fourth proportional to 18,561.56, 27,843.75 and 6,874.88 is: 10,312.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.56 : 27,843.75 = 6,874.88 : x
  2. Step 2: Convert to fraction form
    18,561.56/27,843.75 = 6,874.88/x
  3. Step 3: Cross multiply
    18,561.56x = 27,843.75 × 6,874.88
  4. Step 4: Simplify right side
    18,561.56x = 191,422,300.78
  5. Step 5: Solve for x
    x = 191,422,300.78/18,561.56
  6. Step 6: Final answer
    x = 10,312.84

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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.