Home / 20,761.33-28,650.58-11,685.95

Finding the Fourth Proportional to 20,761.33, 28,650.58 and 11,685.95

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Solution

The fourth proportional to 20,761.33, 28,650.58 and 11,685.95 is: 16,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.33 : 28,650.58 = 11,685.95 : x
  2. Step 2: Convert to fraction form
    20,761.33/28,650.58 = 11,685.95/x
  3. Step 3: Cross multiply
    20,761.33x = 28,650.58 × 11,685.95
  4. Step 4: Simplify right side
    20,761.33x = 334,809,245.35
  5. Step 5: Solve for x
    x = 334,809,245.35/20,761.33
  6. Step 6: Final answer
    x = 16,126.58

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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.