Home / 20,450.45-30,672.09-5,457.76

Finding the Fourth Proportional to 20,450.45, 30,672.09 and 5,457.76

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Solution

The fourth proportional to 20,450.45, 30,672.09 and 5,457.76 is: 8,185.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.45 : 30,672.09 = 5,457.76 : x
  2. Step 2: Convert to fraction form
    20,450.45/30,672.09 = 5,457.76/x
  3. Step 3: Cross multiply
    20,450.45x = 30,672.09 × 5,457.76
  4. Step 4: Simplify right side
    20,450.45x = 167,400,829.24
  5. Step 5: Solve for x
    x = 167,400,829.24/20,450.45
  6. Step 6: Final answer
    x = 8,185.68

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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.