Home / 20,559.41-30,806.81-15,890.85

Finding the Fourth Proportional to 20,559.41, 30,806.81 and 15,890.85

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Solution

The fourth proportional to 20,559.41, 30,806.81 and 15,890.85 is: 23,811.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.41 : 30,806.81 = 15,890.85 : x
  2. Step 2: Convert to fraction form
    20,559.41/30,806.81 = 15,890.85/x
  3. Step 3: Cross multiply
    20,559.41x = 30,806.81 × 15,890.85
  4. Step 4: Simplify right side
    20,559.41x = 489,546,396.69
  5. Step 5: Solve for x
    x = 489,546,396.69/20,559.41
  6. Step 6: Final answer
    x = 23,811.31

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1.5x scale

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.