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Finding the Fourth Proportional to 21,882.99, 30,168.07 and 18,494.05

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Solution

The fourth proportional to 21,882.99, 30,168.07 and 18,494.05 is: 25,496.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,882.99 : 30,168.07 = 18,494.05 : x
  2. Step 2: Convert to fraction form
    21,882.99/30,168.07 = 18,494.05/x
  3. Step 3: Cross multiply
    21,882.99x = 30,168.07 × 18,494.05
  4. Step 4: Simplify right side
    21,882.99x = 557,929,697.06
  5. Step 5: Solve for x
    x = 557,929,697.06/21,882.99
  6. Step 6: Final answer
    x = 25,496.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.