Home / 11,220.78-16,827.21-3,321.18

Finding the Fourth Proportional to 11,220.78, 16,827.21 and 3,321.18

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Solution

The fourth proportional to 11,220.78, 16,827.21 and 3,321.18 is: 4,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.78 : 16,827.21 = 3,321.18 : x
  2. Step 2: Convert to fraction form
    11,220.78/16,827.21 = 3,321.18/x
  3. Step 3: Cross multiply
    11,220.78x = 16,827.21 × 3,321.18
  4. Step 4: Simplify right side
    11,220.78x = 55,886,193.31
  5. Step 5: Solve for x
    x = 55,886,193.31/11,220.78
  6. Step 6: Final answer
    x = 4,980.60

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1.5x scale

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.