Home / 12,268.40-18,424.20-11,879.60

Finding the Fourth Proportional to 12,268.40, 18,424.20 and 11,879.60

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Solution

The fourth proportional to 12,268.40, 18,424.20 and 11,879.60 is: 17,840.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268.40 : 18,424.20 = 11,879.60 : x
  2. Step 2: Convert to fraction form
    12,268.40/18,424.20 = 11,879.60/x
  3. Step 3: Cross multiply
    12,268.40x = 18,424.20 × 11,879.60
  4. Step 4: Simplify right side
    12,268.40x = 218,872,126.32
  5. Step 5: Solve for x
    x = 218,872,126.32/12,268.40
  6. Step 6: Final answer
    x = 17,840.32

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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.