Home / 15,342.11-21,171.97-8,627.78

Finding the Fourth Proportional to 15,342.11, 21,171.97 and 8,627.78

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Solution

The fourth proportional to 15,342.11, 21,171.97 and 8,627.78 is: 11,906.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.11 : 21,171.97 = 8,627.78 : x
  2. Step 2: Convert to fraction form
    15,342.11/21,171.97 = 8,627.78/x
  3. Step 3: Cross multiply
    15,342.11x = 21,171.97 × 8,627.78
  4. Step 4: Simplify right side
    15,342.11x = 182,667,163.04
  5. Step 5: Solve for x
    x = 182,667,163.04/15,342.11
  6. Step 6: Final answer
    x = 11,906.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.