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Finding the Fourth Proportional to 18,005.30, 27,007.74 and 6,158.96

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Solution

The fourth proportional to 18,005.30, 27,007.74 and 6,158.96 is: 9,238.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.30 : 27,007.74 = 6,158.96 : x
  2. Step 2: Convert to fraction form
    18,005.30/27,007.74 = 6,158.96/x
  3. Step 3: Cross multiply
    18,005.30x = 27,007.74 × 6,158.96
  4. Step 4: Simplify right side
    18,005.30x = 166,339,590.35
  5. Step 5: Solve for x
    x = 166,339,590.35/18,005.30
  6. Step 6: Final answer
    x = 9,238.37

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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.