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Finding the Fourth Proportional to 18,381.56, 27,575.07 and 8,521.83

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Solution

The fourth proportional to 18,381.56, 27,575.07 and 8,521.83 is: 12,784.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.56 : 27,575.07 = 8,521.83 : x
  2. Step 2: Convert to fraction form
    18,381.56/27,575.07 = 8,521.83/x
  3. Step 3: Cross multiply
    18,381.56x = 27,575.07 × 8,521.83
  4. Step 4: Simplify right side
    18,381.56x = 234,990,058.78
  5. Step 5: Solve for x
    x = 234,990,058.78/18,381.56
  6. Step 6: Final answer
    x = 12,784.01

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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.