Home / 20,268.96-30,382.79-11,485.32

Finding the Fourth Proportional to 20,268.96, 30,382.79 and 11,485.32

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Solution

The fourth proportional to 20,268.96, 30,382.79 and 11,485.32 is: 17,216.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.96 : 30,382.79 = 11,485.32 : x
  2. Step 2: Convert to fraction form
    20,268.96/30,382.79 = 11,485.32/x
  3. Step 3: Cross multiply
    20,268.96x = 30,382.79 × 11,485.32
  4. Step 4: Simplify right side
    20,268.96x = 348,956,008.22
  5. Step 5: Solve for x
    x = 348,956,008.22/20,268.96
  6. Step 6: Final answer
    x = 17,216.28

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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.