Home / 11,321.22-16,982.61-4,740.78

Finding the Fourth Proportional to 11,321.22, 16,982.61 and 4,740.78

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Solution

The fourth proportional to 11,321.22, 16,982.61 and 4,740.78 is: 7,111.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.22 : 16,982.61 = 4,740.78 : x
  2. Step 2: Convert to fraction form
    11,321.22/16,982.61 = 4,740.78/x
  3. Step 3: Cross multiply
    11,321.22x = 16,982.61 × 4,740.78
  4. Step 4: Simplify right side
    11,321.22x = 80,510,817.84
  5. Step 5: Solve for x
    x = 80,510,817.84/11,321.22
  6. Step 6: Final answer
    x = 7,111.50

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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.