Home / 11,217.78-16,822.71-3,318.18

Finding the Fourth Proportional to 11,217.78, 16,822.71 and 3,318.18

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Solution

The fourth proportional to 11,217.78, 16,822.71 and 3,318.18 is: 4,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,217.78 : 16,822.71 = 3,318.18 : x
  2. Step 2: Convert to fraction form
    11,217.78/16,822.71 = 3,318.18/x
  3. Step 3: Cross multiply
    11,217.78x = 16,822.71 × 3,318.18
  4. Step 4: Simplify right side
    11,217.78x = 55,820,779.87
  5. Step 5: Solve for x
    x = 55,820,779.87/11,217.78
  6. Step 6: Final answer
    x = 4,976.10

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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.