Home / 30,812-42,520.38-16,664.80

Finding the Fourth Proportional to 30,812, 42,520.38 and 16,664.80

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Solution

The fourth proportional to 30,812, 42,520.38 and 16,664.80 is: 22,997.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812 : 42,520.38 = 16,664.80 : x
  2. Step 2: Convert to fraction form
    30,812/42,520.38 = 16,664.80/x
  3. Step 3: Cross multiply
    30,812x = 42,520.38 × 16,664.80
  4. Step 4: Simplify right side
    30,812x = 708,593,628.62
  5. Step 5: Solve for x
    x = 708,593,628.62/30,812
  6. Step 6: Final answer
    x = 22,997.33

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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.