Home / 13,719.04-20,519.96-11,453.80

Finding the Fourth Proportional to 13,719.04, 20,519.96 and 11,453.80

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Solution

The fourth proportional to 13,719.04, 20,519.96 and 11,453.80 is: 17,131.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.04 : 20,519.96 = 11,453.80 : x
  2. Step 2: Convert to fraction form
    13,719.04/20,519.96 = 11,453.80/x
  3. Step 3: Cross multiply
    13,719.04x = 20,519.96 × 11,453.80
  4. Step 4: Simplify right side
    13,719.04x = 235,031,517.85
  5. Step 5: Solve for x
    x = 235,031,517.85/13,719.04
  6. Step 6: Final answer
    x = 17,131.78

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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.