Home / 20,638.98-30,958.44-10,126.80

Finding the Fourth Proportional to 20,638.98, 30,958.44 and 10,126.80

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Solution

The fourth proportional to 20,638.98, 30,958.44 and 10,126.80 is: 15,190.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.98 : 30,958.44 = 10,126.80 : x
  2. Step 2: Convert to fraction form
    20,638.98/30,958.44 = 10,126.80/x
  3. Step 3: Cross multiply
    20,638.98x = 30,958.44 × 10,126.80
  4. Step 4: Simplify right side
    20,638.98x = 313,509,930.19
  5. Step 5: Solve for x
    x = 313,509,930.19/20,638.98
  6. Step 6: Final answer
    x = 15,190.19

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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.