Home / 10,719.92-16,078.32-2,929.36

Finding the Fourth Proportional to 10,719.92, 16,078.32 and 2,929.36

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Solution

The fourth proportional to 10,719.92, 16,078.32 and 2,929.36 is: 4,393.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,719.92 : 16,078.32 = 2,929.36 : x
  2. Step 2: Convert to fraction form
    10,719.92/16,078.32 = 2,929.36/x
  3. Step 3: Cross multiply
    10,719.92x = 16,078.32 × 2,929.36
  4. Step 4: Simplify right side
    10,719.92x = 47,099,187.48
  5. Step 5: Solve for x
    x = 47,099,187.48/10,719.92
  6. Step 6: Final answer
    x = 4,393.61

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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.