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Finding the Fourth Proportional to 18,269.92, 27,407.74 and 7,739.97

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Solution

The fourth proportional to 18,269.92, 27,407.74 and 7,739.97 is: 11,611.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.92 : 27,407.74 = 7,739.97 : x
  2. Step 2: Convert to fraction form
    18,269.92/27,407.74 = 7,739.97/x
  3. Step 3: Cross multiply
    18,269.92x = 27,407.74 × 7,739.97
  4. Step 4: Simplify right side
    18,269.92x = 212,134,948.33
  5. Step 5: Solve for x
    x = 212,134,948.33/18,269.92
  6. Step 6: Final answer
    x = 11,611.16

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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.