Home / 13,517.44-18,632.88-12,431.22

Finding the Fourth Proportional to 13,517.44, 18,632.88 and 12,431.22

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Solution

The fourth proportional to 13,517.44, 18,632.88 and 12,431.22 is: 17,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.44 : 18,632.88 = 12,431.22 : x
  2. Step 2: Convert to fraction form
    13,517.44/18,632.88 = 12,431.22/x
  3. Step 3: Cross multiply
    13,517.44x = 18,632.88 × 12,431.22
  4. Step 4: Simplify right side
    13,517.44x = 231,629,430.51
  5. Step 5: Solve for x
    x = 231,629,430.51/13,517.44
  6. Step 6: Final answer
    x = 17,135.60

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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.