Home / 20,173.97-30,229.33-12,762.78

Finding the Fourth Proportional to 20,173.97, 30,229.33 and 12,762.78

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Solution

The fourth proportional to 20,173.97, 30,229.33 and 12,762.78 is: 19,124.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.97 : 30,229.33 = 12,762.78 : x
  2. Step 2: Convert to fraction form
    20,173.97/30,229.33 = 12,762.78/x
  3. Step 3: Cross multiply
    20,173.97x = 30,229.33 × 12,762.78
  4. Step 4: Simplify right side
    20,173.97x = 385,810,173.62
  5. Step 5: Solve for x
    x = 385,810,173.62/20,173.97
  6. Step 6: Final answer
    x = 19,124.15

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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.