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Finding the Fourth Proportional to 21,859.52, 32,793.44 and 8,009.28

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Solution

The fourth proportional to 21,859.52, 32,793.44 and 8,009.28 is: 12,015.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.52 : 32,793.44 = 8,009.28 : x
  2. Step 2: Convert to fraction form
    21,859.52/32,793.44 = 8,009.28/x
  3. Step 3: Cross multiply
    21,859.52x = 32,793.44 × 8,009.28
  4. Step 4: Simplify right side
    21,859.52x = 262,651,843.12
  5. Step 5: Solve for x
    x = 262,651,843.12/21,859.52
  6. Step 6: Final answer
    x = 12,015.44

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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.