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Finding the Fourth Proportional to 19,480.56, 26,881.03 and 11,928.79

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Solution

The fourth proportional to 19,480.56, 26,881.03 and 11,928.79 is: 16,460.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,480.56 : 26,881.03 = 11,928.79 : x
  2. Step 2: Convert to fraction form
    19,480.56/26,881.03 = 11,928.79/x
  3. Step 3: Cross multiply
    19,480.56x = 26,881.03 × 11,928.79
  4. Step 4: Simplify right side
    19,480.56x = 320,658,161.85
  5. Step 5: Solve for x
    x = 320,658,161.85/19,480.56
  6. Step 6: Final answer
    x = 16,460.42

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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.