Home / 21,267.66-31,903.74-8,788.62

Finding the Fourth Proportional to 21,267.66, 31,903.74 and 8,788.62

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Solution

The fourth proportional to 21,267.66, 31,903.74 and 8,788.62 is: 13,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.66 : 31,903.74 = 8,788.62 : x
  2. Step 2: Convert to fraction form
    21,267.66/31,903.74 = 8,788.62/x
  3. Step 3: Cross multiply
    21,267.66x = 31,903.74 × 8,788.62
  4. Step 4: Simplify right side
    21,267.66x = 280,389,847.44
  5. Step 5: Solve for x
    x = 280,389,847.44/21,267.66
  6. Step 6: Final answer
    x = 13,183.86

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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.