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Finding the Fourth Proportional to 21,914.44, 32,872.11 and 7,123.33

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Solution

The fourth proportional to 21,914.44, 32,872.11 and 7,123.33 is: 10,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,914.44 : 32,872.11 = 7,123.33 : x
  2. Step 2: Convert to fraction form
    21,914.44/32,872.11 = 7,123.33/x
  3. Step 3: Cross multiply
    21,914.44x = 32,872.11 × 7,123.33
  4. Step 4: Simplify right side
    21,914.44x = 234,158,887.33
  5. Step 5: Solve for x
    x = 234,158,887.33/21,914.44
  6. Step 6: Final answer
    x = 10,685.14

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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.