Home / 13,770.40-19,003.22-8,105.36

Finding the Fourth Proportional to 13,770.40, 19,003.22 and 8,105.36

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Solution

The fourth proportional to 13,770.40, 19,003.22 and 8,105.36 is: 11,185.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.40 : 19,003.22 = 8,105.36 : x
  2. Step 2: Convert to fraction form
    13,770.40/19,003.22 = 8,105.36/x
  3. Step 3: Cross multiply
    13,770.40x = 19,003.22 × 8,105.36
  4. Step 4: Simplify right side
    13,770.40x = 154,027,939.26
  5. Step 5: Solve for x
    x = 154,027,939.26/13,770.40
  6. Step 6: Final answer
    x = 11,185.44

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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.