Home / 18,735.36-28,080.48-6,879.60

Finding the Fourth Proportional to 18,735.36, 28,080.48 and 6,879.60

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Solution

The fourth proportional to 18,735.36, 28,080.48 and 6,879.60 is: 10,311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.36 : 28,080.48 = 6,879.60 : x
  2. Step 2: Convert to fraction form
    18,735.36/28,080.48 = 6,879.60/x
  3. Step 3: Cross multiply
    18,735.36x = 28,080.48 × 6,879.60
  4. Step 4: Simplify right side
    18,735.36x = 193,182,470.21
  5. Step 5: Solve for x
    x = 193,182,470.21/18,735.36
  6. Step 6: Final answer
    x = 10,311.12

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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.