Home / 20,173.60-30,241.20-15,728.80

Finding the Fourth Proportional to 20,173.60, 30,241.20 and 15,728.80

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Solution

The fourth proportional to 20,173.60, 30,241.20 and 15,728.80 is: 23,578.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.60 : 30,241.20 = 15,728.80 : x
  2. Step 2: Convert to fraction form
    20,173.60/30,241.20 = 15,728.80/x
  3. Step 3: Cross multiply
    20,173.60x = 30,241.20 × 15,728.80
  4. Step 4: Simplify right side
    20,173.60x = 475,657,786.56
  5. Step 5: Solve for x
    x = 475,657,786.56/20,173.60
  6. Step 6: Final answer
    x = 23,578.23

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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.