Home / 11,971.12-17,957.64-3,205.96

Finding the Fourth Proportional to 11,971.12, 17,957.64 and 3,205.96

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Solution

The fourth proportional to 11,971.12, 17,957.64 and 3,205.96 is: 4,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.12 : 17,957.64 = 3,205.96 : x
  2. Step 2: Convert to fraction form
    11,971.12/17,957.64 = 3,205.96/x
  3. Step 3: Cross multiply
    11,971.12x = 17,957.64 × 3,205.96
  4. Step 4: Simplify right side
    11,971.12x = 57,571,475.53
  5. Step 5: Solve for x
    x = 57,571,475.53/11,971.12
  6. Step 6: Final answer
    x = 4,809.20

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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.