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Finding the Fourth Proportional to 20,356.25, 30,673.04 and 16,739.49

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Solution

The fourth proportional to 20,356.25, 30,673.04 and 16,739.49 is: 25,223.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.25 : 30,673.04 = 16,739.49 : x
  2. Step 2: Convert to fraction form
    20,356.25/30,673.04 = 16,739.49/x
  3. Step 3: Cross multiply
    20,356.25x = 30,673.04 × 16,739.49
  4. Step 4: Simplify right side
    20,356.25x = 513,451,124.76
  5. Step 5: Solve for x
    x = 513,451,124.76/20,356.25
  6. Step 6: Final answer
    x = 25,223.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.