Home / 21,383.14-29,508.79-11,951.71

Finding the Fourth Proportional to 21,383.14, 29,508.79 and 11,951.71

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Solution

The fourth proportional to 21,383.14, 29,508.79 and 11,951.71 is: 16,493.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.14 : 29,508.79 = 11,951.71 : x
  2. Step 2: Convert to fraction form
    21,383.14/29,508.79 = 11,951.71/x
  3. Step 3: Cross multiply
    21,383.14x = 29,508.79 × 11,951.71
  4. Step 4: Simplify right side
    21,383.14x = 352,680,500.53
  5. Step 5: Solve for x
    x = 352,680,500.53/21,383.14
  6. Step 6: Final answer
    x = 16,493.39

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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.