Home / 12,197.45-16,819.12-7,940.66

Finding the Fourth Proportional to 12,197.45, 16,819.12 and 7,940.66

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Solution

The fourth proportional to 12,197.45, 16,819.12 and 7,940.66 is: 10,949.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,197.45 : 16,819.12 = 7,940.66 : x
  2. Step 2: Convert to fraction form
    12,197.45/16,819.12 = 7,940.66/x
  3. Step 3: Cross multiply
    12,197.45x = 16,819.12 × 7,940.66
  4. Step 4: Simplify right side
    12,197.45x = 133,554,913.42
  5. Step 5: Solve for x
    x = 133,554,913.42/12,197.45
  6. Step 6: Final answer
    x = 10,949.41

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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.