Home / 20,839.94-28,759.22-11,887.35

Finding the Fourth Proportional to 20,839.94, 28,759.22 and 11,887.35

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Solution

The fourth proportional to 20,839.94, 28,759.22 and 11,887.35 is: 16,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.94 : 28,759.22 = 11,887.35 : x
  2. Step 2: Convert to fraction form
    20,839.94/28,759.22 = 11,887.35/x
  3. Step 3: Cross multiply
    20,839.94x = 28,759.22 × 11,887.35
  4. Step 4: Simplify right side
    20,839.94x = 341,870,913.87
  5. Step 5: Solve for x
    x = 341,870,913.87/20,839.94
  6. Step 6: Final answer
    x = 16,404.60

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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.