Home / 20,653.44-30,969.16-8,172.96

Finding the Fourth Proportional to 20,653.44, 30,969.16 and 8,172.96

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Solution

The fourth proportional to 20,653.44, 30,969.16 and 8,172.96 is: 12,255.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.44 : 30,969.16 = 8,172.96 : x
  2. Step 2: Convert to fraction form
    20,653.44/30,969.16 = 8,172.96/x
  3. Step 3: Cross multiply
    20,653.44x = 30,969.16 × 8,172.96
  4. Step 4: Simplify right side
    20,653.44x = 253,109,705.91
  5. Step 5: Solve for x
    x = 253,109,705.91/20,653.44
  6. Step 6: Final answer
    x = 12,255.09

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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.