Home / 11,982.21-17,977.18-7,830.33

Finding the Fourth Proportional to 11,982.21, 17,977.18 and 7,830.33

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Solution

The fourth proportional to 11,982.21, 17,977.18 and 7,830.33 is: 11,748.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,982.21 : 17,977.18 = 7,830.33 : x
  2. Step 2: Convert to fraction form
    11,982.21/17,977.18 = 7,830.33/x
  3. Step 3: Cross multiply
    11,982.21x = 17,977.18 × 7,830.33
  4. Step 4: Simplify right side
    11,982.21x = 140,767,251.87
  5. Step 5: Solve for x
    x = 140,767,251.87/11,982.21
  6. Step 6: Final answer
    x = 11,748.02

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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.