Home / 21,170.72-31,759.32-5,589.56

Finding the Fourth Proportional to 21,170.72, 31,759.32 and 5,589.56

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Solution

The fourth proportional to 21,170.72, 31,759.32 and 5,589.56 is: 8,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.72 : 31,759.32 = 5,589.56 : x
  2. Step 2: Convert to fraction form
    21,170.72/31,759.32 = 5,589.56/x
  3. Step 3: Cross multiply
    21,170.72x = 31,759.32 × 5,589.56
  4. Step 4: Simplify right side
    21,170.72x = 177,520,624.70
  5. Step 5: Solve for x
    x = 177,520,624.70/21,170.72
  6. Step 6: Final answer
    x = 8,385.20

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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.