Home / 39,771.96-54,885.68-21,867.09

Finding the Fourth Proportional to 39,771.96, 54,885.68 and 21,867.09

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Solution

The fourth proportional to 39,771.96, 54,885.68 and 21,867.09 is: 30,176.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,771.96 : 54,885.68 = 21,867.09 : x
  2. Step 2: Convert to fraction form
    39,771.96/54,885.68 = 21,867.09/x
  3. Step 3: Cross multiply
    39,771.96x = 54,885.68 × 21,867.09
  4. Step 4: Simplify right side
    39,771.96x = 1,200,190,104.27
  5. Step 5: Solve for x
    x = 1,200,190,104.27/39,771.96
  6. Step 6: Final answer
    x = 30,176.79

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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.