Home / 11,719.76-16,176.32-8,135

Finding the Fourth Proportional to 11,719.76, 16,176.32 and 8,135

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Solution

The fourth proportional to 11,719.76, 16,176.32 and 8,135 is: 11,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.76 : 16,176.32 = 8,135 : x
  2. Step 2: Convert to fraction form
    11,719.76/16,176.32 = 8,135/x
  3. Step 3: Cross multiply
    11,719.76x = 16,176.32 × 8,135
  4. Step 4: Simplify right side
    11,719.76x = 131,594,363.20
  5. Step 5: Solve for x
    x = 131,594,363.20/11,719.76
  6. Step 6: Final answer
    x = 11,228.42

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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.