Home / 21,183.75-31,776.46-6,392.67

Finding the Fourth Proportional to 21,183.75, 31,776.46 and 6,392.67

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Solution

The fourth proportional to 21,183.75, 31,776.46 and 6,392.67 is: 9,589.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.75 : 31,776.46 = 6,392.67 : x
  2. Step 2: Convert to fraction form
    21,183.75/31,776.46 = 6,392.67/x
  3. Step 3: Cross multiply
    21,183.75x = 31,776.46 × 6,392.67
  4. Step 4: Simplify right side
    21,183.75x = 203,136,422.55
  5. Step 5: Solve for x
    x = 203,136,422.55/21,183.75
  6. Step 6: Final answer
    x = 9,589.26

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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.