Home / 11,321.55-16,980.40-3,529.75

Finding the Fourth Proportional to 11,321.55, 16,980.40 and 3,529.75

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Solution

The fourth proportional to 11,321.55, 16,980.40 and 3,529.75 is: 5,294.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.55 : 16,980.40 = 3,529.75 : x
  2. Step 2: Convert to fraction form
    11,321.55/16,980.40 = 3,529.75/x
  3. Step 3: Cross multiply
    11,321.55x = 16,980.40 × 3,529.75
  4. Step 4: Simplify right side
    11,321.55x = 59,936,566.90
  5. Step 5: Solve for x
    x = 59,936,566.90/11,321.55
  6. Step 6: Final answer
    x = 5,294.02

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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.