Home / 12,215.70-16,857.66-6,910.39

Finding the Fourth Proportional to 12,215.70, 16,857.66 and 6,910.39

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Solution

The fourth proportional to 12,215.70, 16,857.66 and 6,910.39 is: 9,536.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.70 : 16,857.66 = 6,910.39 : x
  2. Step 2: Convert to fraction form
    12,215.70/16,857.66 = 6,910.39/x
  3. Step 3: Cross multiply
    12,215.70x = 16,857.66 × 6,910.39
  4. Step 4: Simplify right side
    12,215.70x = 116,493,005.09
  5. Step 5: Solve for x
    x = 116,493,005.09/12,215.70
  6. Step 6: Final answer
    x = 9,536.33

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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.