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Finding the Fourth Proportional to 21,893.56, 32,825.34 and 7,853.28

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Solution

The fourth proportional to 21,893.56, 32,825.34 and 7,853.28 is: 11,774.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.56 : 32,825.34 = 7,853.28 : x
  2. Step 2: Convert to fraction form
    21,893.56/32,825.34 = 7,853.28/x
  3. Step 3: Cross multiply
    21,893.56x = 32,825.34 × 7,853.28
  4. Step 4: Simplify right side
    21,893.56x = 257,786,586.12
  5. Step 5: Solve for x
    x = 257,786,586.12/21,893.56
  6. Step 6: Final answer
    x = 11,774.54

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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.