Home / 20,946.06-28,906.02-11,514.78

Finding the Fourth Proportional to 20,946.06, 28,906.02 and 11,514.78

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Solution

The fourth proportional to 20,946.06, 28,906.02 and 11,514.78 is: 15,890.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.06 : 28,906.02 = 11,514.78 : x
  2. Step 2: Convert to fraction form
    20,946.06/28,906.02 = 11,514.78/x
  3. Step 3: Cross multiply
    20,946.06x = 28,906.02 × 11,514.78
  4. Step 4: Simplify right side
    20,946.06x = 332,846,460.98
  5. Step 5: Solve for x
    x = 332,846,460.98/20,946.06
  6. Step 6: Final answer
    x = 15,890.65

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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.