Home / 21,172.14-31,757.67-5,589.90

Finding the Fourth Proportional to 21,172.14, 31,757.67 and 5,589.90

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Solution

The fourth proportional to 21,172.14, 31,757.67 and 5,589.90 is: 8,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.14 : 31,757.67 = 5,589.90 : x
  2. Step 2: Convert to fraction form
    21,172.14/31,757.67 = 5,589.90/x
  3. Step 3: Cross multiply
    21,172.14x = 31,757.67 × 5,589.90
  4. Step 4: Simplify right side
    21,172.14x = 177,522,199.53
  5. Step 5: Solve for x
    x = 177,522,199.53/21,172.14
  6. Step 6: Final answer
    x = 8,384.71

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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.