Home / 20,676.84-28,533.96-11,245.56

Finding the Fourth Proportional to 20,676.84, 28,533.96 and 11,245.56

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Solution

The fourth proportional to 20,676.84, 28,533.96 and 11,245.56 is: 15,518.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.84 : 28,533.96 = 11,245.56 : x
  2. Step 2: Convert to fraction form
    20,676.84/28,533.96 = 11,245.56/x
  3. Step 3: Cross multiply
    20,676.84x = 28,533.96 × 11,245.56
  4. Step 4: Simplify right side
    20,676.84x = 320,880,359.22
  5. Step 5: Solve for x
    x = 320,880,359.22/20,676.84
  6. Step 6: Final answer
    x = 15,518.83

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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.