Home / 13,185.66-18,195.43-7,217.44

Finding the Fourth Proportional to 13,185.66, 18,195.43 and 7,217.44

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Solution

The fourth proportional to 13,185.66, 18,195.43 and 7,217.44 is: 9,959.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.66 : 18,195.43 = 7,217.44 : x
  2. Step 2: Convert to fraction form
    13,185.66/18,195.43 = 7,217.44/x
  3. Step 3: Cross multiply
    13,185.66x = 18,195.43 × 7,217.44
  4. Step 4: Simplify right side
    13,185.66x = 131,324,424.30
  5. Step 5: Solve for x
    x = 131,324,424.30/13,185.66
  6. Step 6: Final answer
    x = 9,959.64

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Half scale
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Double scale
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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.