Home / 11,683.82-16,123.60-6,378.64

Finding the Fourth Proportional to 11,683.82, 16,123.60 and 6,378.64

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Solution

The fourth proportional to 11,683.82, 16,123.60 and 6,378.64 is: 8,802.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,683.82 : 16,123.60 = 6,378.64 : x
  2. Step 2: Convert to fraction form
    11,683.82/16,123.60 = 6,378.64/x
  3. Step 3: Cross multiply
    11,683.82x = 16,123.60 × 6,378.64
  4. Step 4: Simplify right side
    11,683.82x = 102,846,639.90
  5. Step 5: Solve for x
    x = 102,846,639.90/11,683.82
  6. Step 6: Final answer
    x = 8,802.48

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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.