Home / 11,331.68-15,638.78-6,856.54

Finding the Fourth Proportional to 11,331.68, 15,638.78 and 6,856.54

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Solution

The fourth proportional to 11,331.68, 15,638.78 and 6,856.54 is: 9,462.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.68 : 15,638.78 = 6,856.54 : x
  2. Step 2: Convert to fraction form
    11,331.68/15,638.78 = 6,856.54/x
  3. Step 3: Cross multiply
    11,331.68x = 15,638.78 × 6,856.54
  4. Step 4: Simplify right side
    11,331.68x = 107,227,920.62
  5. Step 5: Solve for x
    x = 107,227,920.62/11,331.68
  6. Step 6: Final answer
    x = 9,462.67

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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.