Home / 38,786.19-53,530.34-21,791.75

Finding the Fourth Proportional to 38,786.19, 53,530.34 and 21,791.75

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Solution

The fourth proportional to 38,786.19, 53,530.34 and 21,791.75 is: 30,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,786.19 : 53,530.34 = 21,791.75 : x
  2. Step 2: Convert to fraction form
    38,786.19/53,530.34 = 21,791.75/x
  3. Step 3: Cross multiply
    38,786.19x = 53,530.34 × 21,791.75
  4. Step 4: Simplify right side
    38,786.19x = 1,166,519,786.70
  5. Step 5: Solve for x
    x = 1,166,519,786.70/38,786.19
  6. Step 6: Final answer
    x = 30,075.65

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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.