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Finding the Fourth Proportional to 21,912.87, 32,847.44 and 8,567.57

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Solution

The fourth proportional to 21,912.87, 32,847.44 and 8,567.57 is: 12,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.87 : 32,847.44 = 8,567.57 : x
  2. Step 2: Convert to fraction form
    21,912.87/32,847.44 = 8,567.57/x
  3. Step 3: Cross multiply
    21,912.87x = 32,847.44 × 8,567.57
  4. Step 4: Simplify right side
    21,912.87x = 281,422,534.45
  5. Step 5: Solve for x
    x = 281,422,534.45/21,912.87
  6. Step 6: Final answer
    x = 12,842.80

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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.