Home / 39,609.21-54,660.78-21,703.89

Finding the Fourth Proportional to 39,609.21, 54,660.78 and 21,703.89

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Solution

The fourth proportional to 39,609.21, 54,660.78 and 21,703.89 is: 29,951.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,609.21 : 54,660.78 = 21,703.89 : x
  2. Step 2: Convert to fraction form
    39,609.21/54,660.78 = 21,703.89/x
  3. Step 3: Cross multiply
    39,609.21x = 54,660.78 × 21,703.89
  4. Step 4: Simplify right side
    39,609.21x = 1,186,351,556.43
  5. Step 5: Solve for x
    x = 1,186,351,556.43/39,609.21
  6. Step 6: Final answer
    x = 29,951.41

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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.