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Finding the Fourth Proportional to 18,005.69, 27,018.26 and 8,771.69

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Solution

The fourth proportional to 18,005.69, 27,018.26 and 8,771.69 is: 13,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.69 : 27,018.26 = 8,771.69 : x
  2. Step 2: Convert to fraction form
    18,005.69/27,018.26 = 8,771.69/x
  3. Step 3: Cross multiply
    18,005.69x = 27,018.26 × 8,771.69
  4. Step 4: Simplify right side
    18,005.69x = 236,995,801.06
  5. Step 5: Solve for x
    x = 236,995,801.06/18,005.69
  6. Step 6: Final answer
    x = 13,162.27

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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.