Home / 11,916.66-16,429.84-8,517.76

Finding the Fourth Proportional to 11,916.66, 16,429.84 and 8,517.76

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Solution

The fourth proportional to 11,916.66, 16,429.84 and 8,517.76 is: 11,743.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.66 : 16,429.84 = 8,517.76 : x
  2. Step 2: Convert to fraction form
    11,916.66/16,429.84 = 8,517.76/x
  3. Step 3: Cross multiply
    11,916.66x = 16,429.84 × 8,517.76
  4. Step 4: Simplify right side
    11,916.66x = 139,945,433.96
  5. Step 5: Solve for x
    x = 139,945,433.96/11,916.66
  6. Step 6: Final answer
    x = 11,743.68

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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.