Home / 20,450.72-30,675.20-6,410.46

Finding the Fourth Proportional to 20,450.72, 30,675.20 and 6,410.46

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Solution

The fourth proportional to 20,450.72, 30,675.20 and 6,410.46 is: 9,615.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.72 : 30,675.20 = 6,410.46 : x
  2. Step 2: Convert to fraction form
    20,450.72/30,675.20 = 6,410.46/x
  3. Step 3: Cross multiply
    20,450.72x = 30,675.20 × 6,410.46
  4. Step 4: Simplify right side
    20,450.72x = 196,642,142.59
  5. Step 5: Solve for x
    x = 196,642,142.59/20,450.72
  6. Step 6: Final answer
    x = 9,615.41

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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.