Home / 13,811.67-20,717.40-8,266.56

Finding the Fourth Proportional to 13,811.67, 20,717.40 and 8,266.56

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Solution

The fourth proportional to 13,811.67, 20,717.40 and 8,266.56 is: 12,399.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.67 : 20,717.40 = 8,266.56 : x
  2. Step 2: Convert to fraction form
    13,811.67/20,717.40 = 8,266.56/x
  3. Step 3: Cross multiply
    13,811.67x = 20,717.40 × 8,266.56
  4. Step 4: Simplify right side
    13,811.67x = 171,261,630.14
  5. Step 5: Solve for x
    x = 171,261,630.14/13,811.67
  6. Step 6: Final answer
    x = 12,399.78

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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.