Home / 20,126.40-30,189.60-16,900.80

Finding the Fourth Proportional to 20,126.40, 30,189.60 and 16,900.80

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Solution

The fourth proportional to 20,126.40, 30,189.60 and 16,900.80 is: 25,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.40 : 30,189.60 = 16,900.80 : x
  2. Step 2: Convert to fraction form
    20,126.40/30,189.60 = 16,900.80/x
  3. Step 3: Cross multiply
    20,126.40x = 30,189.60 × 16,900.80
  4. Step 4: Simplify right side
    20,126.40x = 510,228,391.68
  5. Step 5: Solve for x
    x = 510,228,391.68/20,126.40
  6. Step 6: Final answer
    x = 25,351.20

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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.