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Finding the Fourth Proportional to 18,801.60, 28,200.19 and 7,556.48

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Solution

The fourth proportional to 18,801.60, 28,200.19 and 7,556.48 is: 11,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.60 : 28,200.19 = 7,556.48 : x
  2. Step 2: Convert to fraction form
    18,801.60/28,200.19 = 7,556.48/x
  3. Step 3: Cross multiply
    18,801.60x = 28,200.19 × 7,556.48
  4. Step 4: Simplify right side
    18,801.60x = 213,094,171.73
  5. Step 5: Solve for x
    x = 213,094,171.73/18,801.60
  6. Step 6: Final answer
    x = 11,333.83

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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.