Home / 30,391.36-41,907.01-19,761.28

Finding the Fourth Proportional to 30,391.36, 41,907.01 and 19,761.28

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Solution

The fourth proportional to 30,391.36, 41,907.01 and 19,761.28 is: 27,249.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.36 : 41,907.01 = 19,761.28 : x
  2. Step 2: Convert to fraction form
    30,391.36/41,907.01 = 19,761.28/x
  3. Step 3: Cross multiply
    30,391.36x = 41,907.01 × 19,761.28
  4. Step 4: Simplify right side
    30,391.36x = 828,135,899.63
  5. Step 5: Solve for x
    x = 828,135,899.63/30,391.36
  6. Step 6: Final answer
    x = 27,249.06

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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.