Home / 20,763.50-28,654.42-11,811.82

Finding the Fourth Proportional to 20,763.50, 28,654.42 and 11,811.82

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Solution

The fourth proportional to 20,763.50, 28,654.42 and 11,811.82 is: 16,300.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.50 : 28,654.42 = 11,811.82 : x
  2. Step 2: Convert to fraction form
    20,763.50/28,654.42 = 11,811.82/x
  3. Step 3: Cross multiply
    20,763.50x = 28,654.42 × 11,811.82
  4. Step 4: Simplify right side
    20,763.50x = 338,460,851.24
  5. Step 5: Solve for x
    x = 338,460,851.24/20,763.50
  6. Step 6: Final answer
    x = 16,300.76

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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.