Home / 39,811.36-54,940.98-21,907.66

Finding the Fourth Proportional to 39,811.36, 54,940.98 and 21,907.66

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Solution

The fourth proportional to 39,811.36, 54,940.98 and 21,907.66 is: 30,233.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,811.36 : 54,940.98 = 21,907.66 : x
  2. Step 2: Convert to fraction form
    39,811.36/54,940.98 = 21,907.66/x
  3. Step 3: Cross multiply
    39,811.36x = 54,940.98 × 21,907.66
  4. Step 4: Simplify right side
    39,811.36x = 1,203,628,309.91
  5. Step 5: Solve for x
    x = 1,203,628,309.91/39,811.36
  6. Step 6: Final answer
    x = 30,233.29

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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.