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Finding the Fourth Proportional to 18,165.16, 27,237.86 and 5,679.80

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Solution

The fourth proportional to 18,165.16, 27,237.86 and 5,679.80 is: 8,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,165.16 : 27,237.86 = 5,679.80 : x
  2. Step 2: Convert to fraction form
    18,165.16/27,237.86 = 5,679.80/x
  3. Step 3: Cross multiply
    18,165.16x = 27,237.86 × 5,679.80
  4. Step 4: Simplify right side
    18,165.16x = 154,705,597.23
  5. Step 5: Solve for x
    x = 154,705,597.23/18,165.16
  6. Step 6: Final answer
    x = 8,516.61

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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.