Home / 20,137.76-27,790.54-11,640.16

Finding the Fourth Proportional to 20,137.76, 27,790.54 and 11,640.16

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Solution

The fourth proportional to 20,137.76, 27,790.54 and 11,640.16 is: 16,063.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.76 : 27,790.54 = 11,640.16 : x
  2. Step 2: Convert to fraction form
    20,137.76/27,790.54 = 11,640.16/x
  3. Step 3: Cross multiply
    20,137.76x = 27,790.54 × 11,640.16
  4. Step 4: Simplify right side
    20,137.76x = 323,486,246.88
  5. Step 5: Solve for x
    x = 323,486,246.88/20,137.76
  6. Step 6: Final answer
    x = 16,063.66

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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.