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Finding the Fourth Proportional to 21,520.22, 32,220.46 and 10,967.49

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Solution

The fourth proportional to 21,520.22, 32,220.46 and 10,967.49 is: 16,420.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.22 : 32,220.46 = 10,967.49 : x
  2. Step 2: Convert to fraction form
    21,520.22/32,220.46 = 10,967.49/x
  3. Step 3: Cross multiply
    21,520.22x = 32,220.46 × 10,967.49
  4. Step 4: Simplify right side
    21,520.22x = 353,377,572.85
  5. Step 5: Solve for x
    x = 353,377,572.85/21,520.22
  6. Step 6: Final answer
    x = 16,420.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.