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Finding the Fourth Proportional to 18,608.47, 27,917.09 and 6,129.49

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Solution

The fourth proportional to 18,608.47, 27,917.09 and 6,129.49 is: 9,195.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.47 : 27,917.09 = 6,129.49 : x
  2. Step 2: Convert to fraction form
    18,608.47/27,917.09 = 6,129.49/x
  3. Step 3: Cross multiply
    18,608.47x = 27,917.09 × 6,129.49
  4. Step 4: Simplify right side
    18,608.47x = 171,117,493.34
  5. Step 5: Solve for x
    x = 171,117,493.34/18,608.47
  6. Step 6: Final answer
    x = 9,195.68

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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.