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Finding the Fourth Proportional to 18,611.52, 27,917.36 and 4,760.52

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Solution

The fourth proportional to 18,611.52, 27,917.36 and 4,760.52 is: 7,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.52 : 27,917.36 = 4,760.52 : x
  2. Step 2: Convert to fraction form
    18,611.52/27,917.36 = 4,760.52/x
  3. Step 3: Cross multiply
    18,611.52x = 27,917.36 × 4,760.52
  4. Step 4: Simplify right side
    18,611.52x = 132,901,150.63
  5. Step 5: Solve for x
    x = 132,901,150.63/18,611.52
  6. Step 6: Final answer
    x = 7,140.80

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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.