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Finding the Fourth Proportional to 20,591.37, 30,713.04 and 19,968.35

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Solution

The fourth proportional to 20,591.37, 30,713.04 and 19,968.35 is: 29,783.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.37 : 30,713.04 = 19,968.35 : x
  2. Step 2: Convert to fraction form
    20,591.37/30,713.04 = 19,968.35/x
  3. Step 3: Cross multiply
    20,591.37x = 30,713.04 × 19,968.35
  4. Step 4: Simplify right side
    20,591.37x = 613,288,578.72
  5. Step 5: Solve for x
    x = 613,288,578.72/20,591.37
  6. Step 6: Final answer
    x = 29,783.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.