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Finding the Fourth Proportional to 30,203.82, 41,720.49 and 22,989.90

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Solution

The fourth proportional to 30,203.82, 41,720.49 and 22,989.90 is: 31,755.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,203.82 : 41,720.49 = 22,989.90 : x
  2. Step 2: Convert to fraction form
    30,203.82/41,720.49 = 22,989.90/x
  3. Step 3: Cross multiply
    30,203.82x = 41,720.49 × 22,989.90
  4. Step 4: Simplify right side
    30,203.82x = 959,149,893.05
  5. Step 5: Solve for x
    x = 959,149,893.05/30,203.82
  6. Step 6: Final answer
    x = 31,755.91

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1.5x scale

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.