Home / 12,805.36-19,202.87-5,785.09

Finding the Fourth Proportional to 12,805.36, 19,202.87 and 5,785.09

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Solution

The fourth proportional to 12,805.36, 19,202.87 and 5,785.09 is: 8,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.36 : 19,202.87 = 5,785.09 : x
  2. Step 2: Convert to fraction form
    12,805.36/19,202.87 = 5,785.09/x
  3. Step 3: Cross multiply
    12,805.36x = 19,202.87 × 5,785.09
  4. Step 4: Simplify right side
    12,805.36x = 111,090,297.66
  5. Step 5: Solve for x
    x = 111,090,297.66/12,805.36
  6. Step 6: Final answer
    x = 8,675.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.