Home / 20,201.96-30,238.30-10,818.60

Finding the Fourth Proportional to 20,201.96, 30,238.30 and 10,818.60

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Solution

The fourth proportional to 20,201.96, 30,238.30 and 10,818.60 is: 16,193.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.96 : 30,238.30 = 10,818.60 : x
  2. Step 2: Convert to fraction form
    20,201.96/30,238.30 = 10,818.60/x
  3. Step 3: Cross multiply
    20,201.96x = 30,238.30 × 10,818.60
  4. Step 4: Simplify right side
    20,201.96x = 327,136,072.38
  5. Step 5: Solve for x
    x = 327,136,072.38/20,201.96
  6. Step 6: Final answer
    x = 16,193.28

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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.