Home / 30,811.89-42,520.41-16,664.73

Finding the Fourth Proportional to 30,811.89, 42,520.41 and 16,664.73

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Solution

The fourth proportional to 30,811.89, 42,520.41 and 16,664.73 is: 22,997.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.89 : 42,520.41 = 16,664.73 : x
  2. Step 2: Convert to fraction form
    30,811.89/42,520.41 = 16,664.73/x
  3. Step 3: Cross multiply
    30,811.89x = 42,520.41 × 16,664.73
  4. Step 4: Simplify right side
    30,811.89x = 708,591,152.14
  5. Step 5: Solve for x
    x = 708,591,152.14/30,811.89
  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.