Home / 20,409.03-30,625.36-8,561.75

Finding the Fourth Proportional to 20,409.03, 30,625.36 and 8,561.75

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Solution

The fourth proportional to 20,409.03, 30,625.36 and 8,561.75 is: 12,847.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.03 : 30,625.36 = 8,561.75 : x
  2. Step 2: Convert to fraction form
    20,409.03/30,625.36 = 8,561.75/x
  3. Step 3: Cross multiply
    20,409.03x = 30,625.36 × 8,561.75
  4. Step 4: Simplify right side
    20,409.03x = 262,206,675.98
  5. Step 5: Solve for x
    x = 262,206,675.98/20,409.03
  6. Step 6: Final answer
    x = 12,847.58

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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.