Home / 12,105.26-16,717.65-8,338.22

Finding the Fourth Proportional to 12,105.26, 16,717.65 and 8,338.22

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Solution

The fourth proportional to 12,105.26, 16,717.65 and 8,338.22 is: 11,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,105.26 : 16,717.65 = 8,338.22 : x
  2. Step 2: Convert to fraction form
    12,105.26/16,717.65 = 8,338.22/x
  3. Step 3: Cross multiply
    12,105.26x = 16,717.65 × 8,338.22
  4. Step 4: Simplify right side
    12,105.26x = 139,395,443.58
  5. Step 5: Solve for x
    x = 139,395,443.58/12,105.26
  6. Step 6: Final answer
    x = 11,515.28

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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.