Home / 20,132.44-30,190.16-6,978.88

Finding the Fourth Proportional to 20,132.44, 30,190.16 and 6,978.88

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Solution

The fourth proportional to 20,132.44, 30,190.16 and 6,978.88 is: 10,465.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.44 : 30,190.16 = 6,978.88 : x
  2. Step 2: Convert to fraction form
    20,132.44/30,190.16 = 6,978.88/x
  3. Step 3: Cross multiply
    20,132.44x = 30,190.16 × 6,978.88
  4. Step 4: Simplify right side
    20,132.44x = 210,693,503.82
  5. Step 5: Solve for x
    x = 210,693,503.82/20,132.44
  6. Step 6: Final answer
    x = 10,465.37

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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.