Home / 20,209.60-27,891.30-11,258.56

Finding the Fourth Proportional to 20,209.60, 27,891.30 and 11,258.56

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Solution

The fourth proportional to 20,209.60, 27,891.30 and 11,258.56 is: 15,537.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.60 : 27,891.30 = 11,258.56 : x
  2. Step 2: Convert to fraction form
    20,209.60/27,891.30 = 11,258.56/x
  3. Step 3: Cross multiply
    20,209.60x = 27,891.30 × 11,258.56
  4. Step 4: Simplify right side
    20,209.60x = 314,015,874.53
  5. Step 5: Solve for x
    x = 314,015,874.53/20,209.60
  6. Step 6: Final answer
    x = 15,537.96

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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.