Home / 12,668.45-17,478.20-8,197.86

Finding the Fourth Proportional to 12,668.45, 17,478.20 and 8,197.86

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Solution

The fourth proportional to 12,668.45, 17,478.20 and 8,197.86 is: 11,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.45 : 17,478.20 = 8,197.86 : x
  2. Step 2: Convert to fraction form
    12,668.45/17,478.20 = 8,197.86/x
  3. Step 3: Cross multiply
    12,668.45x = 17,478.20 × 8,197.86
  4. Step 4: Simplify right side
    12,668.45x = 143,283,857.15
  5. Step 5: Solve for x
    x = 143,283,857.15/12,668.45
  6. Step 6: Final answer
    x = 11,310.29

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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.