Home / 20,910.98-28,857.22-11,350.92

Finding the Fourth Proportional to 20,910.98, 28,857.22 and 11,350.92

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Solution

The fourth proportional to 20,910.98, 28,857.22 and 11,350.92 is: 15,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.98 : 28,857.22 = 11,350.92 : x
  2. Step 2: Convert to fraction form
    20,910.98/28,857.22 = 11,350.92/x
  3. Step 3: Cross multiply
    20,910.98x = 28,857.22 × 11,350.92
  4. Step 4: Simplify right side
    20,910.98x = 327,555,995.64
  5. Step 5: Solve for x
    x = 327,555,995.64/20,910.98
  6. Step 6: Final answer
    x = 15,664.31

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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.