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Finding the Fourth Proportional to 18,622.16, 27,927.31 and 6,139.86

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Solution

The fourth proportional to 18,622.16, 27,927.31 and 6,139.86 is: 9,207.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.16 : 27,927.31 = 6,139.86 : x
  2. Step 2: Convert to fraction form
    18,622.16/27,927.31 = 6,139.86/x
  3. Step 3: Cross multiply
    18,622.16x = 27,927.31 × 6,139.86
  4. Step 4: Simplify right side
    18,622.16x = 171,469,773.58
  5. Step 5: Solve for x
    x = 171,469,773.58/18,622.16
  6. Step 6: Final answer
    x = 9,207.83

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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.