Home / 13,517.81-20,267.15-5,190.80

Finding the Fourth Proportional to 13,517.81, 20,267.15 and 5,190.80

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Solution

The fourth proportional to 13,517.81, 20,267.15 and 5,190.80 is: 7,782.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.81 : 20,267.15 = 5,190.80 : x
  2. Step 2: Convert to fraction form
    13,517.81/20,267.15 = 5,190.80/x
  3. Step 3: Cross multiply
    13,517.81x = 20,267.15 × 5,190.80
  4. Step 4: Simplify right side
    13,517.81x = 105,202,722.22
  5. Step 5: Solve for x
    x = 105,202,722.22/13,517.81
  6. Step 6: Final answer
    x = 7,782.53

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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.