Home / 20,126.07-30,190.73-6,978.56

Finding the Fourth Proportional to 20,126.07, 30,190.73 and 6,978.56

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Solution

The fourth proportional to 20,126.07, 30,190.73 and 6,978.56 is: 10,468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.07 : 30,190.73 = 6,978.56 : x
  2. Step 2: Convert to fraction form
    20,126.07/30,190.73 = 6,978.56/x
  3. Step 3: Cross multiply
    20,126.07x = 30,190.73 × 6,978.56
  4. Step 4: Simplify right side
    20,126.07x = 210,687,634.90
  5. Step 5: Solve for x
    x = 210,687,634.90/20,126.07
  6. Step 6: Final answer
    x = 10,468.39

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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.