Home / 11,881.35-17,819.60-4,090.77

Finding the Fourth Proportional to 11,881.35, 17,819.60 and 4,090.77

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Solution

The fourth proportional to 11,881.35, 17,819.60 and 4,090.77 is: 6,135.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,881.35 : 17,819.60 = 4,090.77 : x
  2. Step 2: Convert to fraction form
    11,881.35/17,819.60 = 4,090.77/x
  3. Step 3: Cross multiply
    11,881.35x = 17,819.60 × 4,090.77
  4. Step 4: Simplify right side
    11,881.35x = 72,895,864.64
  5. Step 5: Solve for x
    x = 72,895,864.64/11,881.35
  6. Step 6: Final answer
    x = 6,135.32

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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.