Home / 20,240.28-30,355.76-5,450.36

Finding the Fourth Proportional to 20,240.28, 30,355.76 and 5,450.36

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Solution

The fourth proportional to 20,240.28, 30,355.76 and 5,450.36 is: 8,174.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,240.28 : 30,355.76 = 5,450.36 : x
  2. Step 2: Convert to fraction form
    20,240.28/30,355.76 = 5,450.36/x
  3. Step 3: Cross multiply
    20,240.28x = 30,355.76 × 5,450.36
  4. Step 4: Simplify right side
    20,240.28x = 165,449,681.92
  5. Step 5: Solve for x
    x = 165,449,681.92/20,240.28
  6. Step 6: Final answer
    x = 8,174.28

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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.