Home / 11,231.40-16,813.82-8,322.76

Finding the Fourth Proportional to 11,231.40, 16,813.82 and 8,322.76

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Solution

The fourth proportional to 11,231.40, 16,813.82 and 8,322.76 is: 12,459.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,231.40 : 16,813.82 = 8,322.76 : x
  2. Step 2: Convert to fraction form
    11,231.40/16,813.82 = 8,322.76/x
  3. Step 3: Cross multiply
    11,231.40x = 16,813.82 × 8,322.76
  4. Step 4: Simplify right side
    11,231.40x = 139,937,388.54
  5. Step 5: Solve for x
    x = 139,937,388.54/11,231.40
  6. Step 6: Final answer
    x = 12,459.48

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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.