Home / 20,676.99-28,534.23-11,245.56

Finding the Fourth Proportional to 20,676.99, 28,534.23 and 11,245.56

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Solution

The fourth proportional to 20,676.99, 28,534.23 and 11,245.56 is: 15,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.99 : 28,534.23 = 11,245.56 : x
  2. Step 2: Convert to fraction form
    20,676.99/28,534.23 = 11,245.56/x
  3. Step 3: Cross multiply
    20,676.99x = 28,534.23 × 11,245.56
  4. Step 4: Simplify right side
    20,676.99x = 320,883,395.52
  5. Step 5: Solve for x
    x = 320,883,395.52/20,676.99
  6. Step 6: Final answer
    x = 15,518.86

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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.