Home / 20,149.86-30,076.90-18,665.44

Finding the Fourth Proportional to 20,149.86, 30,076.90 and 18,665.44

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Solution

The fourth proportional to 20,149.86, 30,076.90 and 18,665.44 is: 27,861.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.86 : 30,076.90 = 18,665.44 : x
  2. Step 2: Convert to fraction form
    20,149.86/30,076.90 = 18,665.44/x
  3. Step 3: Cross multiply
    20,149.86x = 30,076.90 × 18,665.44
  4. Step 4: Simplify right side
    20,149.86x = 561,398,450.48
  5. Step 5: Solve for x
    x = 561,398,450.48/20,149.86
  6. Step 6: Final answer
    x = 27,861.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.