Home / 20,945.58-28,904.94-11,514.18

Finding the Fourth Proportional to 20,945.58, 28,904.94 and 11,514.18

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Solution

The fourth proportional to 20,945.58, 28,904.94 and 11,514.18 is: 15,889.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.58 : 28,904.94 = 11,514.18 : x
  2. Step 2: Convert to fraction form
    20,945.58/28,904.94 = 11,514.18/x
  3. Step 3: Cross multiply
    20,945.58x = 28,904.94 × 11,514.18
  4. Step 4: Simplify right side
    20,945.58x = 332,816,682.05
  5. Step 5: Solve for x
    x = 332,816,682.05/20,945.58
  6. Step 6: Final answer
    x = 15,889.59

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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.