Home / 13,811.12-20,701.76-6,782.96

Finding the Fourth Proportional to 13,811.12, 20,701.76 and 6,782.96

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Solution

The fourth proportional to 13,811.12, 20,701.76 and 6,782.96 is: 10,167.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.12 : 20,701.76 = 6,782.96 : x
  2. Step 2: Convert to fraction form
    13,811.12/20,701.76 = 6,782.96/x
  3. Step 3: Cross multiply
    13,811.12x = 20,701.76 × 6,782.96
  4. Step 4: Simplify right side
    13,811.12x = 140,419,210.01
  5. Step 5: Solve for x
    x = 140,419,210.01/13,811.12
  6. Step 6: Final answer
    x = 10,167.11

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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.