Home / 20,136.43-27,780.31-11,636.98

Finding the Fourth Proportional to 20,136.43, 27,780.31 and 11,636.98

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Solution

The fourth proportional to 20,136.43, 27,780.31 and 11,636.98 is: 16,054.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.43 : 27,780.31 = 11,636.98 : x
  2. Step 2: Convert to fraction form
    20,136.43/27,780.31 = 11,636.98/x
  3. Step 3: Cross multiply
    20,136.43x = 27,780.31 × 11,636.98
  4. Step 4: Simplify right side
    20,136.43x = 323,278,911.86
  5. Step 5: Solve for x
    x = 323,278,911.86/20,136.43
  6. Step 6: Final answer
    x = 16,054.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.