Home / 13,185.36-18,195.80-7,217.06

Finding the Fourth Proportional to 13,185.36, 18,195.80 and 7,217.06

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Solution

The fourth proportional to 13,185.36, 18,195.80 and 7,217.06 is: 9,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.36 : 18,195.80 = 7,217.06 : x
  2. Step 2: Convert to fraction form
    13,185.36/18,195.80 = 7,217.06/x
  3. Step 3: Cross multiply
    13,185.36x = 18,195.80 × 7,217.06
  4. Step 4: Simplify right side
    13,185.36x = 131,320,175.65
  5. Step 5: Solve for x
    x = 131,320,175.65/13,185.36
  6. Step 6: Final answer
    x = 9,959.54

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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.