Home / 18,912.16-28,372.46-5,765.56

Finding the Fourth Proportional to 18,912.16, 28,372.46 and 5,765.56

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Solution

The fourth proportional to 18,912.16, 28,372.46 and 5,765.56 is: 8,649.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.16 : 28,372.46 = 5,765.56 : x
  2. Step 2: Convert to fraction form
    18,912.16/28,372.46 = 5,765.56/x
  3. Step 3: Cross multiply
    18,912.16x = 28,372.46 × 5,765.56
  4. Step 4: Simplify right side
    18,912.16x = 163,583,120.48
  5. Step 5: Solve for x
    x = 163,583,120.48/18,912.16
  6. Step 6: Final answer
    x = 8,649.63

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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.