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Finding the Fourth Proportional to 28,388.44, 42,582.64 and 8,667.08

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Solution

The fourth proportional to 28,388.44, 42,582.64 and 8,667.08 is: 13,000.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.44 : 42,582.64 = 8,667.08 : x
  2. Step 2: Convert to fraction form
    28,388.44/42,582.64 = 8,667.08/x
  3. Step 3: Cross multiply
    28,388.44x = 42,582.64 × 8,667.08
  4. Step 4: Simplify right side
    28,388.44x = 369,067,147.49
  5. Step 5: Solve for x
    x = 369,067,147.49/28,388.44
  6. Step 6: Final answer
    x = 13,000.61

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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.