Home / 13,268.44-18,310.98-7,961.32

Finding the Fourth Proportional to 13,268.44, 18,310.98 and 7,961.32

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Solution

The fourth proportional to 13,268.44, 18,310.98 and 7,961.32 is: 10,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.44 : 18,310.98 = 7,961.32 : x
  2. Step 2: Convert to fraction form
    13,268.44/18,310.98 = 7,961.32/x
  3. Step 3: Cross multiply
    13,268.44x = 18,310.98 × 7,961.32
  4. Step 4: Simplify right side
    13,268.44x = 145,779,571.29
  5. Step 5: Solve for x
    x = 145,779,571.29/13,268.44
  6. Step 6: Final answer
    x = 10,986.94

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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.