Home / 13,487.82-20,265.75-8,559.78

Finding the Fourth Proportional to 13,487.82, 20,265.75 and 8,559.78

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Solution

The fourth proportional to 13,487.82, 20,265.75 and 8,559.78 is: 12,861.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.82 : 20,265.75 = 8,559.78 : x
  2. Step 2: Convert to fraction form
    13,487.82/20,265.75 = 8,559.78/x
  3. Step 3: Cross multiply
    13,487.82x = 20,265.75 × 8,559.78
  4. Step 4: Simplify right side
    13,487.82x = 173,470,361.54
  5. Step 5: Solve for x
    x = 173,470,361.54/13,487.82
  6. Step 6: Final answer
    x = 12,861.26

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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.