Home / 20,566.68-28,380.87-11,616

Finding the Fourth Proportional to 20,566.68, 28,380.87 and 11,616

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Solution

The fourth proportional to 20,566.68, 28,380.87 and 11,616 is: 16,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.68 : 28,380.87 = 11,616 : x
  2. Step 2: Convert to fraction form
    20,566.68/28,380.87 = 11,616/x
  3. Step 3: Cross multiply
    20,566.68x = 28,380.87 × 11,616
  4. Step 4: Simplify right side
    20,566.68x = 329,672,185.92
  5. Step 5: Solve for x
    x = 329,672,185.92/20,566.68
  6. Step 6: Final answer
    x = 16,029.43

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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.