Home / 39,711.58-54,803.97-21,806.38

Finding the Fourth Proportional to 39,711.58, 54,803.97 and 21,806.38

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Solution

The fourth proportional to 39,711.58, 54,803.97 and 21,806.38 is: 30,093.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,711.58 : 54,803.97 = 21,806.38 : x
  2. Step 2: Convert to fraction form
    39,711.58/54,803.97 = 21,806.38/x
  3. Step 3: Cross multiply
    39,711.58x = 54,803.97 × 21,806.38
  4. Step 4: Simplify right side
    39,711.58x = 1,195,076,195.33
  5. Step 5: Solve for x
    x = 1,195,076,195.33/39,711.58
  6. Step 6: Final answer
    x = 30,093.90

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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.