Home / 12,135.44-18,171.96-7,208.48

Finding the Fourth Proportional to 12,135.44, 18,171.96 and 7,208.48

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Solution

The fourth proportional to 12,135.44, 18,171.96 and 7,208.48 is: 10,794.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.44 : 18,171.96 = 7,208.48 : x
  2. Step 2: Convert to fraction form
    12,135.44/18,171.96 = 7,208.48/x
  3. Step 3: Cross multiply
    12,135.44x = 18,171.96 × 7,208.48
  4. Step 4: Simplify right side
    12,135.44x = 130,992,210.22
  5. Step 5: Solve for x
    x = 130,992,210.22/12,135.44
  6. Step 6: Final answer
    x = 10,794.19

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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.