Home / 28,004.22-42,007.86-11,361.78

Finding the Fourth Proportional to 28,004.22, 42,007.86 and 11,361.78

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Solution

The fourth proportional to 28,004.22, 42,007.86 and 11,361.78 is: 17,043.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.22 : 42,007.86 = 11,361.78 : x
  2. Step 2: Convert to fraction form
    28,004.22/42,007.86 = 11,361.78/x
  3. Step 3: Cross multiply
    28,004.22x = 42,007.86 × 11,361.78
  4. Step 4: Simplify right side
    28,004.22x = 477,284,063.59
  5. Step 5: Solve for x
    x = 477,284,063.59/28,004.22
  6. Step 6: Final answer
    x = 17,043.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.