Home / 11,324.40-16,986.80-3,929.10

Finding the Fourth Proportional to 11,324.40, 16,986.80 and 3,929.10

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Solution

The fourth proportional to 11,324.40, 16,986.80 and 3,929.10 is: 5,893.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,324.40 : 16,986.80 = 3,929.10 : x
  2. Step 2: Convert to fraction form
    11,324.40/16,986.80 = 3,929.10/x
  3. Step 3: Cross multiply
    11,324.40x = 16,986.80 × 3,929.10
  4. Step 4: Simplify right side
    11,324.40x = 66,742,835.88
  5. Step 5: Solve for x
    x = 66,742,835.88/11,324.40
  6. Step 6: Final answer
    x = 5,893.72

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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.