Home / 20,516.45-30,832.38-12,197.95

Finding the Fourth Proportional to 20,516.45, 30,832.38 and 12,197.95

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Solution

The fourth proportional to 20,516.45, 30,832.38 and 12,197.95 is: 18,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.45 : 30,832.38 = 12,197.95 : x
  2. Step 2: Convert to fraction form
    20,516.45/30,832.38 = 12,197.95/x
  3. Step 3: Cross multiply
    20,516.45x = 30,832.38 × 12,197.95
  4. Step 4: Simplify right side
    20,516.45x = 376,091,829.62
  5. Step 5: Solve for x
    x = 376,091,829.62/20,516.45
  6. Step 6: Final answer
    x = 18,331.23

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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.