Home / 13,950.40-20,923.20-5,180.80

Finding the Fourth Proportional to 13,950.40, 20,923.20 and 5,180.80

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Solution

The fourth proportional to 13,950.40, 20,923.20 and 5,180.80 is: 7,770.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,950.40 : 20,923.20 = 5,180.80 : x
  2. Step 2: Convert to fraction form
    13,950.40/20,923.20 = 5,180.80/x
  3. Step 3: Cross multiply
    13,950.40x = 20,923.20 × 5,180.80
  4. Step 4: Simplify right side
    13,950.40x = 108,398,914.56
  5. Step 5: Solve for x
    x = 108,398,914.56/13,950.40
  6. Step 6: Final answer
    x = 7,770.31

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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.