Home / 11,830.10-17,745.03-8,121.02

Finding the Fourth Proportional to 11,830.10, 17,745.03 and 8,121.02

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Solution

The fourth proportional to 11,830.10, 17,745.03 and 8,121.02 is: 12,181.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,830.10 : 17,745.03 = 8,121.02 : x
  2. Step 2: Convert to fraction form
    11,830.10/17,745.03 = 8,121.02/x
  3. Step 3: Cross multiply
    11,830.10x = 17,745.03 × 8,121.02
  4. Step 4: Simplify right side
    11,830.10x = 144,107,654.81
  5. Step 5: Solve for x
    x = 144,107,654.81/11,830.10
  6. Step 6: Final answer
    x = 12,181.45

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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.