Home / 22,361.05-30,825.74-15,625.78

Finding the Fourth Proportional to 22,361.05, 30,825.74 and 15,625.78

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Solution

The fourth proportional to 22,361.05, 30,825.74 and 15,625.78 is: 21,540.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,361.05 : 30,825.74 = 15,625.78 : x
  2. Step 2: Convert to fraction form
    22,361.05/30,825.74 = 15,625.78/x
  3. Step 3: Cross multiply
    22,361.05x = 30,825.74 × 15,625.78
  4. Step 4: Simplify right side
    22,361.05x = 481,676,149.63
  5. Step 5: Solve for x
    x = 481,676,149.63/22,361.05
  6. Step 6: Final answer
    x = 21,540.85

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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.