Home / 39,771.42-54,884.70-21,867.56

Finding the Fourth Proportional to 39,771.42, 54,884.70 and 21,867.56

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Solution

The fourth proportional to 39,771.42, 54,884.70 and 21,867.56 is: 30,177.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,771.42 : 54,884.70 = 21,867.56 : x
  2. Step 2: Convert to fraction form
    39,771.42/54,884.70 = 21,867.56/x
  3. Step 3: Cross multiply
    39,771.42x = 54,884.70 × 21,867.56
  4. Step 4: Simplify right side
    39,771.42x = 1,200,194,195.91
  5. Step 5: Solve for x
    x = 1,200,194,195.91/39,771.42
  6. Step 6: Final answer
    x = 30,177.30

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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.