Home / 11,869.12-17,812.43-5,629.15

Finding the Fourth Proportional to 11,869.12, 17,812.43 and 5,629.15

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Solution

The fourth proportional to 11,869.12, 17,812.43 and 5,629.15 is: 8,447.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.12 : 17,812.43 = 5,629.15 : x
  2. Step 2: Convert to fraction form
    11,869.12/17,812.43 = 5,629.15/x
  3. Step 3: Cross multiply
    11,869.12x = 17,812.43 × 5,629.15
  4. Step 4: Simplify right side
    11,869.12x = 100,268,921.49
  5. Step 5: Solve for x
    x = 100,268,921.49/11,869.12
  6. Step 6: Final answer
    x = 8,447.88

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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.