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Finding the Fourth Proportional to 21,843.30, 32,736.60 and 10,131.60

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Solution

The fourth proportional to 21,843.30, 32,736.60 and 10,131.60 is: 15,184.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,843.30 : 32,736.60 = 10,131.60 : x
  2. Step 2: Convert to fraction form
    21,843.30/32,736.60 = 10,131.60/x
  3. Step 3: Cross multiply
    21,843.30x = 32,736.60 × 10,131.60
  4. Step 4: Simplify right side
    21,843.30x = 331,674,136.56
  5. Step 5: Solve for x
    x = 331,674,136.56/21,843.30
  6. Step 6: Final answer
    x = 15,184.25

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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.