Home / 20,844.73-31,258.79-12,085.80

Finding the Fourth Proportional to 20,844.73, 31,258.79 and 12,085.80

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Solution

The fourth proportional to 20,844.73, 31,258.79 and 12,085.80 is: 18,123.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.73 : 31,258.79 = 12,085.80 : x
  2. Step 2: Convert to fraction form
    20,844.73/31,258.79 = 12,085.80/x
  3. Step 3: Cross multiply
    20,844.73x = 31,258.79 × 12,085.80
  4. Step 4: Simplify right side
    20,844.73x = 377,787,484.18
  5. Step 5: Solve for x
    x = 377,787,484.18/20,844.73
  6. Step 6: Final answer
    x = 18,123.88

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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.