Home / 20,140.58-27,796.18-12,187.18

Finding the Fourth Proportional to 20,140.58, 27,796.18 and 12,187.18

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Solution

The fourth proportional to 20,140.58, 27,796.18 and 12,187.18 is: 16,819.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.58 : 27,796.18 = 12,187.18 : x
  2. Step 2: Convert to fraction form
    20,140.58/27,796.18 = 12,187.18/x
  3. Step 3: Cross multiply
    20,140.58x = 27,796.18 × 12,187.18
  4. Step 4: Simplify right side
    20,140.58x = 338,757,048.97
  5. Step 5: Solve for x
    x = 338,757,048.97/20,140.58
  6. Step 6: Final answer
    x = 16,819.63

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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.