Home / 20,729.95-28,612.92-11,777.83

Finding the Fourth Proportional to 20,729.95, 28,612.92 and 11,777.83

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Solution

The fourth proportional to 20,729.95, 28,612.92 and 11,777.83 is: 16,256.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.95 : 28,612.92 = 11,777.83 : x
  2. Step 2: Convert to fraction form
    20,729.95/28,612.92 = 11,777.83/x
  3. Step 3: Cross multiply
    20,729.95x = 28,612.92 × 11,777.83
  4. Step 4: Simplify right side
    20,729.95x = 336,998,107.56
  5. Step 5: Solve for x
    x = 336,998,107.56/20,729.95
  6. Step 6: Final answer
    x = 16,256.58

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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.