Home / 20,761.50-28,651.66-11,809.82

Finding the Fourth Proportional to 20,761.50, 28,651.66 and 11,809.82

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Solution

The fourth proportional to 20,761.50, 28,651.66 and 11,809.82 is: 16,298.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.50 : 28,651.66 = 11,809.82 : x
  2. Step 2: Convert to fraction form
    20,761.50/28,651.66 = 11,809.82/x
  3. Step 3: Cross multiply
    20,761.50x = 28,651.66 × 11,809.82
  4. Step 4: Simplify right side
    20,761.50x = 338,370,947.30
  5. Step 5: Solve for x
    x = 338,370,947.30/20,761.50
  6. Step 6: Final answer
    x = 16,298.00

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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.