Home / 22,361.09-30,825.78-15,625.81

Finding the Fourth Proportional to 22,361.09, 30,825.78 and 15,625.81

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Solution

The fourth proportional to 22,361.09, 30,825.78 and 15,625.81 is: 21,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,361.09 : 30,825.78 = 15,625.81 : x
  2. Step 2: Convert to fraction form
    22,361.09/30,825.78 = 15,625.81/x
  3. Step 3: Cross multiply
    22,361.09x = 30,825.78 × 15,625.81
  4. Step 4: Simplify right side
    22,361.09x = 481,677,820.45
  5. Step 5: Solve for x
    x = 481,677,820.45/22,361.09
  6. Step 6: Final answer
    x = 21,540.90

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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.