Home / 20,286.19-27,990.15-11,783.26

Finding the Fourth Proportional to 20,286.19, 27,990.15 and 11,783.26

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Solution

The fourth proportional to 20,286.19, 27,990.15 and 11,783.26 is: 16,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.19 : 27,990.15 = 11,783.26 : x
  2. Step 2: Convert to fraction form
    20,286.19/27,990.15 = 11,783.26/x
  3. Step 3: Cross multiply
    20,286.19x = 27,990.15 × 11,783.26
  4. Step 4: Simplify right side
    20,286.19x = 329,815,155.97
  5. Step 5: Solve for x
    x = 329,815,155.97/20,286.19
  6. Step 6: Final answer
    x = 16,258.11

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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.