Home / 20,514.45-30,829.38-12,195.95

Finding the Fourth Proportional to 20,514.45, 30,829.38 and 12,195.95

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Solution

The fourth proportional to 20,514.45, 30,829.38 and 12,195.95 is: 18,328.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.45 : 30,829.38 = 12,195.95 : x
  2. Step 2: Convert to fraction form
    20,514.45/30,829.38 = 12,195.95/x
  3. Step 3: Cross multiply
    20,514.45x = 30,829.38 × 12,195.95
  4. Step 4: Simplify right side
    20,514.45x = 375,993,422.86
  5. Step 5: Solve for x
    x = 375,993,422.86/20,514.45
  6. Step 6: Final answer
    x = 18,328.22

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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.