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Finding the Fourth Proportional to 21,861.12, 32,791.68 and 8,010.24

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Solution

The fourth proportional to 21,861.12, 32,791.68 and 8,010.24 is: 12,015.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,861.12 : 32,791.68 = 8,010.24 : x
  2. Step 2: Convert to fraction form
    21,861.12/32,791.68 = 8,010.24/x
  3. Step 3: Cross multiply
    21,861.12x = 32,791.68 × 8,010.24
  4. Step 4: Simplify right side
    21,861.12x = 262,669,226.80
  5. Step 5: Solve for x
    x = 262,669,226.80/21,861.12
  6. Step 6: Final answer
    x = 12,015.36

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1.5x scale

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.