Home / 20,829.18-31,246.18-6,788.64

Finding the Fourth Proportional to 20,829.18, 31,246.18 and 6,788.64

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Solution

The fourth proportional to 20,829.18, 31,246.18 and 6,788.64 is: 10,183.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.18 : 31,246.18 = 6,788.64 : x
  2. Step 2: Convert to fraction form
    20,829.18/31,246.18 = 6,788.64/x
  3. Step 3: Cross multiply
    20,829.18x = 31,246.18 × 6,788.64
  4. Step 4: Simplify right side
    20,829.18x = 212,119,067.40
  5. Step 5: Solve for x
    x = 212,119,067.40/20,829.18
  6. Step 6: Final answer
    x = 10,183.75

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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.