Home / 20,211.14-27,891.32-11,258.55

Finding the Fourth Proportional to 20,211.14, 27,891.32 and 11,258.55

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Solution

The fourth proportional to 20,211.14, 27,891.32 and 11,258.55 is: 15,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.14 : 27,891.32 = 11,258.55 : x
  2. Step 2: Convert to fraction form
    20,211.14/27,891.32 = 11,258.55/x
  3. Step 3: Cross multiply
    20,211.14x = 27,891.32 × 11,258.55
  4. Step 4: Simplify right side
    20,211.14x = 314,015,764.49
  5. Step 5: Solve for x
    x = 314,015,764.49/20,211.14
  6. Step 6: Final answer
    x = 15,536.77

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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.