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Finding the Fourth Proportional to 21,896.88, 32,861.34 and 8,753.10

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Solution

The fourth proportional to 21,896.88, 32,861.34 and 8,753.10 is: 13,136.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,896.88 : 32,861.34 = 8,753.10 : x
  2. Step 2: Convert to fraction form
    21,896.88/32,861.34 = 8,753.10/x
  3. Step 3: Cross multiply
    21,896.88x = 32,861.34 × 8,753.10
  4. Step 4: Simplify right side
    21,896.88x = 287,638,595.15
  5. Step 5: Solve for x
    x = 287,638,595.15/21,896.88
  6. Step 6: Final answer
    x = 13,136.05

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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.