Home / 20,149.90-30,228.75-7,668.97

Finding the Fourth Proportional to 20,149.90, 30,228.75 and 7,668.97

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Solution

The fourth proportional to 20,149.90, 30,228.75 and 7,668.97 is: 11,504.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.90 : 30,228.75 = 7,668.97 : x
  2. Step 2: Convert to fraction form
    20,149.90/30,228.75 = 7,668.97/x
  3. Step 3: Cross multiply
    20,149.90x = 30,228.75 × 7,668.97
  4. Step 4: Simplify right side
    20,149.90x = 231,823,330.07
  5. Step 5: Solve for x
    x = 231,823,330.07/20,149.90
  6. Step 6: Final answer
    x = 11,504.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.