Home / 20,845.73-31,260.29-12,086.80

Finding the Fourth Proportional to 20,845.73, 31,260.29 and 12,086.80

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Solution

The fourth proportional to 20,845.73, 31,260.29 and 12,086.80 is: 18,125.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.73 : 31,260.29 = 12,086.80 : x
  2. Step 2: Convert to fraction form
    20,845.73/31,260.29 = 12,086.80/x
  3. Step 3: Cross multiply
    20,845.73x = 31,260.29 × 12,086.80
  4. Step 4: Simplify right side
    20,845.73x = 377,836,873.17
  5. Step 5: Solve for x
    x = 377,836,873.17/20,845.73
  6. Step 6: Final answer
    x = 18,125.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.