Home / 19,517.78-26,928.57-11,961.34

Finding the Fourth Proportional to 19,517.78, 26,928.57 and 11,961.34

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Solution

The fourth proportional to 19,517.78, 26,928.57 and 11,961.34 is: 16,502.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,517.78 : 26,928.57 = 11,961.34 : x
  2. Step 2: Convert to fraction form
    19,517.78/26,928.57 = 11,961.34/x
  3. Step 3: Cross multiply
    19,517.78x = 26,928.57 × 11,961.34
  4. Step 4: Simplify right side
    19,517.78x = 322,101,691.73
  5. Step 5: Solve for x
    x = 322,101,691.73/19,517.78
  6. Step 6: Final answer
    x = 16,502.99

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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.