Home / 20,119.98-30,149.16-10,761.33

Finding the Fourth Proportional to 20,119.98, 30,149.16 and 10,761.33

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Solution

The fourth proportional to 20,119.98, 30,149.16 and 10,761.33 is: 16,125.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.98 : 30,149.16 = 10,761.33 : x
  2. Step 2: Convert to fraction form
    20,119.98/30,149.16 = 10,761.33/x
  3. Step 3: Cross multiply
    20,119.98x = 30,149.16 × 10,761.33
  4. Step 4: Simplify right side
    20,119.98x = 324,445,059.98
  5. Step 5: Solve for x
    x = 324,445,059.98/20,119.98
  6. Step 6: Final answer
    x = 16,125.52

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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.