Home / 15,194.75-20,969.80-8,481.68

Finding the Fourth Proportional to 15,194.75, 20,969.80 and 8,481.68

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Solution

The fourth proportional to 15,194.75, 20,969.80 and 8,481.68 is: 11,705.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,194.75 : 20,969.80 = 8,481.68 : x
  2. Step 2: Convert to fraction form
    15,194.75/20,969.80 = 8,481.68/x
  3. Step 3: Cross multiply
    15,194.75x = 20,969.80 × 8,481.68
  4. Step 4: Simplify right side
    15,194.75x = 177,859,133.26
  5. Step 5: Solve for x
    x = 177,859,133.26/15,194.75
  6. Step 6: Final answer
    x = 11,705.31

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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.