Home / 11,385.72-17,080.40-4,811.97

Finding the Fourth Proportional to 11,385.72, 17,080.40 and 4,811.97

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Solution

The fourth proportional to 11,385.72, 17,080.40 and 4,811.97 is: 7,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.72 : 17,080.40 = 4,811.97 : x
  2. Step 2: Convert to fraction form
    11,385.72/17,080.40 = 4,811.97/x
  3. Step 3: Cross multiply
    11,385.72x = 17,080.40 × 4,811.97
  4. Step 4: Simplify right side
    11,385.72x = 82,190,372.39
  5. Step 5: Solve for x
    x = 82,190,372.39/11,385.72
  6. Step 6: Final answer
    x = 7,218.72

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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.