Home / 13,321.56-20,004.62-12,791.80

Finding the Fourth Proportional to 13,321.56, 20,004.62 and 12,791.80

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Solution

The fourth proportional to 13,321.56, 20,004.62 and 12,791.80 is: 19,209.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.56 : 20,004.62 = 12,791.80 : x
  2. Step 2: Convert to fraction form
    13,321.56/20,004.62 = 12,791.80/x
  3. Step 3: Cross multiply
    13,321.56x = 20,004.62 × 12,791.80
  4. Step 4: Simplify right side
    13,321.56x = 255,895,098.12
  5. Step 5: Solve for x
    x = 255,895,098.12/13,321.56
  6. Step 6: Final answer
    x = 19,209.09

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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.