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Finding the Fourth Proportional to 21,893.34, 32,840.10 and 8,749.02

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Solution

The fourth proportional to 21,893.34, 32,840.10 and 8,749.02 is: 13,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.34 : 32,840.10 = 8,749.02 : x
  2. Step 2: Convert to fraction form
    21,893.34/32,840.10 = 8,749.02/x
  3. Step 3: Cross multiply
    21,893.34x = 32,840.10 × 8,749.02
  4. Step 4: Simplify right side
    21,893.34x = 287,318,691.70
  5. Step 5: Solve for x
    x = 287,318,691.70/21,893.34
  6. Step 6: Final answer
    x = 13,123.57

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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.