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Finding the Fourth Proportional to 21,887.47, 32,847.09 and 8,743.60

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Solution

The fourth proportional to 21,887.47, 32,847.09 and 8,743.60 is: 13,121.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.47 : 32,847.09 = 8,743.60 : x
  2. Step 2: Convert to fraction form
    21,887.47/32,847.09 = 8,743.60/x
  3. Step 3: Cross multiply
    21,887.47x = 32,847.09 × 8,743.60
  4. Step 4: Simplify right side
    21,887.47x = 287,201,816.12
  5. Step 5: Solve for x
    x = 287,201,816.12/21,887.47
  6. Step 6: Final answer
    x = 13,121.75

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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.