Home / 13,728.30-20,584.77-5,518.38

Finding the Fourth Proportional to 13,728.30, 20,584.77 and 5,518.38

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Solution

The fourth proportional to 13,728.30, 20,584.77 and 5,518.38 is: 8,274.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.30 : 20,584.77 = 5,518.38 : x
  2. Step 2: Convert to fraction form
    13,728.30/20,584.77 = 5,518.38/x
  3. Step 3: Cross multiply
    13,728.30x = 20,584.77 × 5,518.38
  4. Step 4: Simplify right side
    13,728.30x = 113,594,583.07
  5. Step 5: Solve for x
    x = 113,594,583.07/13,728.30
  6. Step 6: Final answer
    x = 8,274.48

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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.