Home / 20,945.94-28,905.03-11,514.30

Finding the Fourth Proportional to 20,945.94, 28,905.03 and 11,514.30

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Solution

The fourth proportional to 20,945.94, 28,905.03 and 11,514.30 is: 15,889.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.94 : 28,905.03 = 11,514.30 : x
  2. Step 2: Convert to fraction form
    20,945.94/28,905.03 = 11,514.30/x
  3. Step 3: Cross multiply
    20,945.94x = 28,905.03 × 11,514.30
  4. Step 4: Simplify right side
    20,945.94x = 332,821,186.93
  5. Step 5: Solve for x
    x = 332,821,186.93/20,945.94
  6. Step 6: Final answer
    x = 15,889.53

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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.