Home / 20,764.69-28,652.34-11,812.98

Finding the Fourth Proportional to 20,764.69, 28,652.34 and 11,812.98

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Solution

The fourth proportional to 20,764.69, 28,652.34 and 11,812.98 is: 16,300.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.69 : 28,652.34 = 11,812.98 : x
  2. Step 2: Convert to fraction form
    20,764.69/28,652.34 = 11,812.98/x
  3. Step 3: Cross multiply
    20,764.69x = 28,652.34 × 11,812.98
  4. Step 4: Simplify right side
    20,764.69x = 338,469,519.37
  5. Step 5: Solve for x
    x = 338,469,519.37/20,764.69
  6. Step 6: Final answer
    x = 16,300.24

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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.