Home / 12,843.35-17,715.07-11,161.89

Finding the Fourth Proportional to 12,843.35, 17,715.07 and 11,161.89

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Solution

The fourth proportional to 12,843.35, 17,715.07 and 11,161.89 is: 15,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,843.35 : 17,715.07 = 11,161.89 : x
  2. Step 2: Convert to fraction form
    12,843.35/17,715.07 = 11,161.89/x
  3. Step 3: Cross multiply
    12,843.35x = 17,715.07 × 11,161.89
  4. Step 4: Simplify right side
    12,843.35x = 197,733,676.63
  5. Step 5: Solve for x
    x = 197,733,676.63/12,843.35
  6. Step 6: Final answer
    x = 15,395.80

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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.