Home / 12,208.11-16,845.20-8,021.55

Finding the Fourth Proportional to 12,208.11, 16,845.20 and 8,021.55

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Solution

The fourth proportional to 12,208.11, 16,845.20 and 8,021.55 is: 11,068.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.11 : 16,845.20 = 8,021.55 : x
  2. Step 2: Convert to fraction form
    12,208.11/16,845.20 = 8,021.55/x
  3. Step 3: Cross multiply
    12,208.11x = 16,845.20 × 8,021.55
  4. Step 4: Simplify right side
    12,208.11x = 135,124,573.95
  5. Step 5: Solve for x
    x = 135,124,573.95/12,208.11
  6. Step 6: Final answer
    x = 11,068.43

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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.