Home / 20,134.98-30,202.74-6,987.78

Finding the Fourth Proportional to 20,134.98, 30,202.74 and 6,987.78

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Solution

The fourth proportional to 20,134.98, 30,202.74 and 6,987.78 is: 10,481.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.98 : 30,202.74 = 6,987.78 : x
  2. Step 2: Convert to fraction form
    20,134.98/30,202.74 = 6,987.78/x
  3. Step 3: Cross multiply
    20,134.98x = 30,202.74 × 6,987.78
  4. Step 4: Simplify right side
    20,134.98x = 211,050,102.52
  5. Step 5: Solve for x
    x = 211,050,102.52/20,134.98
  6. Step 6: Final answer
    x = 10,481.76

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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.