Home / 20,187.20-27,858.14-11,234.56

Finding the Fourth Proportional to 20,187.20, 27,858.14 and 11,234.56

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Solution

The fourth proportional to 20,187.20, 27,858.14 and 11,234.56 is: 15,503.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.20 : 27,858.14 = 11,234.56 : x
  2. Step 2: Convert to fraction form
    20,187.20/27,858.14 = 11,234.56/x
  3. Step 3: Cross multiply
    20,187.20x = 27,858.14 × 11,234.56
  4. Step 4: Simplify right side
    20,187.20x = 312,973,819.50
  5. Step 5: Solve for x
    x = 312,973,819.50/20,187.20
  6. Step 6: Final answer
    x = 15,503.58

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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.