Home / 20,126.58-30,195.28-6,978.96

Finding the Fourth Proportional to 20,126.58, 30,195.28 and 6,978.96

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Solution

The fourth proportional to 20,126.58, 30,195.28 and 6,978.96 is: 10,470.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.58 : 30,195.28 = 6,978.96 : x
  2. Step 2: Convert to fraction form
    20,126.58/30,195.28 = 6,978.96/x
  3. Step 3: Cross multiply
    20,126.58x = 30,195.28 × 6,978.96
  4. Step 4: Simplify right side
    20,126.58x = 210,731,660.03
  5. Step 5: Solve for x
    x = 210,731,660.03/20,126.58
  6. Step 6: Final answer
    x = 10,470.32

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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.