Home / 21,812.20-30,092.94-12,375.28

Finding the Fourth Proportional to 21,812.20, 30,092.94 and 12,375.28

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Solution

The fourth proportional to 21,812.20, 30,092.94 and 12,375.28 is: 17,073.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,812.20 : 30,092.94 = 12,375.28 : x
  2. Step 2: Convert to fraction form
    21,812.20/30,092.94 = 12,375.28/x
  3. Step 3: Cross multiply
    21,812.20x = 30,092.94 × 12,375.28
  4. Step 4: Simplify right side
    21,812.20x = 372,408,558.52
  5. Step 5: Solve for x
    x = 372,408,558.52/21,812.20
  6. Step 6: Final answer
    x = 17,073.41

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Why These Related Problems?

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