Home / 19,690.88-29,517.73-7,851.96

Finding the Fourth Proportional to 19,690.88, 29,517.73 and 7,851.96

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Solution

The fourth proportional to 19,690.88, 29,517.73 and 7,851.96 is: 11,770.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.88 : 29,517.73 = 7,851.96 : x
  2. Step 2: Convert to fraction form
    19,690.88/29,517.73 = 7,851.96/x
  3. Step 3: Cross multiply
    19,690.88x = 29,517.73 × 7,851.96
  4. Step 4: Simplify right side
    19,690.88x = 231,772,015.62
  5. Step 5: Solve for x
    x = 231,772,015.62/19,690.88
  6. Step 6: Final answer
    x = 11,770.53

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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.