Home / 13,855.82-19,105.90-9,371.79

Finding the Fourth Proportional to 13,855.82, 19,105.90 and 9,371.79

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Solution

The fourth proportional to 13,855.82, 19,105.90 and 9,371.79 is: 12,922.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.82 : 19,105.90 = 9,371.79 : x
  2. Step 2: Convert to fraction form
    13,855.82/19,105.90 = 9,371.79/x
  3. Step 3: Cross multiply
    13,855.82x = 19,105.90 × 9,371.79
  4. Step 4: Simplify right side
    13,855.82x = 179,056,459.13
  5. Step 5: Solve for x
    x = 179,056,459.13/13,855.82
  6. Step 6: Final answer
    x = 12,922.84

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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.