Home / 15,677.75-23,517.95-3,990.94

Finding the Fourth Proportional to 15,677.75, 23,517.95 and 3,990.94

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Solution

The fourth proportional to 15,677.75, 23,517.95 and 3,990.94 is: 5,986.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.75 : 23,517.95 = 3,990.94 : x
  2. Step 2: Convert to fraction form
    15,677.75/23,517.95 = 3,990.94/x
  3. Step 3: Cross multiply
    15,677.75x = 23,517.95 × 3,990.94
  4. Step 4: Simplify right side
    15,677.75x = 93,858,648.62
  5. Step 5: Solve for x
    x = 93,858,648.62/15,677.75
  6. Step 6: Final answer
    x = 5,986.74

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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.