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Finding the Fourth Proportional to 18,127.92, 27,194.76 and 7,739.76

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Solution

The fourth proportional to 18,127.92, 27,194.76 and 7,739.76 is: 11,610.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,127.92 : 27,194.76 = 7,739.76 : x
  2. Step 2: Convert to fraction form
    18,127.92/27,194.76 = 7,739.76/x
  3. Step 3: Cross multiply
    18,127.92x = 27,194.76 × 7,739.76
  4. Step 4: Simplify right side
    18,127.92x = 210,480,915.66
  5. Step 5: Solve for x
    x = 210,480,915.66/18,127.92
  6. Step 6: Final answer
    x = 11,610.87

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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.