Home / 20,729.39-28,606.66-11,777.39

Finding the Fourth Proportional to 20,729.39, 28,606.66 and 11,777.39

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Solution

The fourth proportional to 20,729.39, 28,606.66 and 11,777.39 is: 16,252.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.39 : 28,606.66 = 11,777.39 : x
  2. Step 2: Convert to fraction form
    20,729.39/28,606.66 = 11,777.39/x
  3. Step 3: Cross multiply
    20,729.39x = 28,606.66 × 11,777.39
  4. Step 4: Simplify right side
    20,729.39x = 336,911,618.94
  5. Step 5: Solve for x
    x = 336,911,618.94/20,729.39
  6. Step 6: Final answer
    x = 16,252.85

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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.