Home / 20,514.92-30,830.09-12,196.43

Finding the Fourth Proportional to 20,514.92, 30,830.09 and 12,196.43

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Solution

The fourth proportional to 20,514.92, 30,830.09 and 12,196.43 is: 18,328.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.92 : 30,830.09 = 12,196.43 : x
  2. Step 2: Convert to fraction form
    20,514.92/30,830.09 = 12,196.43/x
  3. Step 3: Cross multiply
    20,514.92x = 30,830.09 × 12,196.43
  4. Step 4: Simplify right side
    20,514.92x = 376,017,034.58
  5. Step 5: Solve for x
    x = 376,017,034.58/20,514.92
  6. Step 6: Final answer
    x = 18,328.95

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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.