Home / 13,812.75-20,704.64-6,783.03

Finding the Fourth Proportional to 13,812.75, 20,704.64 and 6,783.03

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Solution

The fourth proportional to 13,812.75, 20,704.64 and 6,783.03 is: 10,167.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.75 : 20,704.64 = 6,783.03 : x
  2. Step 2: Convert to fraction form
    13,812.75/20,704.64 = 6,783.03/x
  3. Step 3: Cross multiply
    13,812.75x = 20,704.64 × 6,783.03
  4. Step 4: Simplify right side
    13,812.75x = 140,440,160.34
  5. Step 5: Solve for x
    x = 140,440,160.34/13,812.75
  6. Step 6: Final answer
    x = 10,167.43

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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.