Home / 12,453.36-17,184.60-7,147.05

Finding the Fourth Proportional to 12,453.36, 17,184.60 and 7,147.05

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Solution

The fourth proportional to 12,453.36, 17,184.60 and 7,147.05 is: 9,862.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.36 : 17,184.60 = 7,147.05 : x
  2. Step 2: Convert to fraction form
    12,453.36/17,184.60 = 7,147.05/x
  3. Step 3: Cross multiply
    12,453.36x = 17,184.60 × 7,147.05
  4. Step 4: Simplify right side
    12,453.36x = 122,819,195.43
  5. Step 5: Solve for x
    x = 122,819,195.43/12,453.36
  6. Step 6: Final answer
    x = 9,862.33

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Double scale
Find fourth proportional to 12,454.36, 17,185.98 and 7,148.05
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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.