Home / 11,739.98-17,612.70-3,420.88

Finding the Fourth Proportional to 11,739.98, 17,612.70 and 3,420.88

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Solution

The fourth proportional to 11,739.98, 17,612.70 and 3,420.88 is: 5,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,739.98 : 17,612.70 = 3,420.88 : x
  2. Step 2: Convert to fraction form
    11,739.98/17,612.70 = 3,420.88/x
  3. Step 3: Cross multiply
    11,739.98x = 17,612.70 × 3,420.88
  4. Step 4: Simplify right side
    11,739.98x = 60,250,933.18
  5. Step 5: Solve for x
    x = 60,250,933.18/11,739.98
  6. Step 6: Final answer
    x = 5,132.12

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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.