Home / 22,418.36-30,936.24-12,989.96

Finding the Fourth Proportional to 22,418.36, 30,936.24 and 12,989.96

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Solution

The fourth proportional to 22,418.36, 30,936.24 and 12,989.96 is: 17,925.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,418.36 : 30,936.24 = 12,989.96 : x
  2. Step 2: Convert to fraction form
    22,418.36/30,936.24 = 12,989.96/x
  3. Step 3: Cross multiply
    22,418.36x = 30,936.24 × 12,989.96
  4. Step 4: Simplify right side
    22,418.36x = 401,860,520.15
  5. Step 5: Solve for x
    x = 401,860,520.15/22,418.36
  6. Step 6: Final answer
    x = 17,925.51

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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.