Home / 39,786.58-54,905.50-21,882.80

Finding the Fourth Proportional to 39,786.58, 54,905.50 and 21,882.80

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Solution

The fourth proportional to 39,786.58, 54,905.50 and 21,882.80 is: 30,198.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786.58 : 54,905.50 = 21,882.80 : x
  2. Step 2: Convert to fraction form
    39,786.58/54,905.50 = 21,882.80/x
  3. Step 3: Cross multiply
    39,786.58x = 54,905.50 × 21,882.80
  4. Step 4: Simplify right side
    39,786.58x = 1,201,486,075.40
  5. Step 5: Solve for x
    x = 1,201,486,075.40/39,786.58
  6. Step 6: Final answer
    x = 30,198.27

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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.