Home / 20,170.90-30,260.40-16,906.60

Finding the Fourth Proportional to 20,170.90, 30,260.40 and 16,906.60

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Solution

The fourth proportional to 20,170.90, 30,260.40 and 16,906.60 is: 25,363.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.90 : 30,260.40 = 16,906.60 : x
  2. Step 2: Convert to fraction form
    20,170.90/30,260.40 = 16,906.60/x
  3. Step 3: Cross multiply
    20,170.90x = 30,260.40 × 16,906.60
  4. Step 4: Simplify right side
    20,170.90x = 511,600,478.64
  5. Step 5: Solve for x
    x = 511,600,478.64/20,170.90
  6. Step 6: Final answer
    x = 25,363.29

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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.