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Finding the Fourth Proportional to 18,565.76, 27,855.93 and 8,170.22

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Solution

The fourth proportional to 18,565.76, 27,855.93 and 8,170.22 is: 12,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.76 : 27,855.93 = 8,170.22 : x
  2. Step 2: Convert to fraction form
    18,565.76/27,855.93 = 8,170.22/x
  3. Step 3: Cross multiply
    18,565.76x = 27,855.93 × 8,170.22
  4. Step 4: Simplify right side
    18,565.76x = 227,589,146.04
  5. Step 5: Solve for x
    x = 227,589,146.04/18,565.76
  6. Step 6: Final answer
    x = 12,258.54

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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.