Home / 11,331.82-15,638.25-6,856.39

Finding the Fourth Proportional to 11,331.82, 15,638.25 and 6,856.39

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Solution

The fourth proportional to 11,331.82, 15,638.25 and 6,856.39 is: 9,462.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.82 : 15,638.25 = 6,856.39 : x
  2. Step 2: Convert to fraction form
    11,331.82/15,638.25 = 6,856.39/x
  3. Step 3: Cross multiply
    11,331.82x = 15,638.25 × 6,856.39
  4. Step 4: Simplify right side
    11,331.82x = 107,221,940.92
  5. Step 5: Solve for x
    x = 107,221,940.92/11,331.82
  6. Step 6: Final answer
    x = 9,462.02

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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.