Home / 21,511.34-29,684.60-11,951.83

Finding the Fourth Proportional to 21,511.34, 29,684.60 and 11,951.83

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Solution

The fourth proportional to 21,511.34, 29,684.60 and 11,951.83 is: 16,492.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.34 : 29,684.60 = 11,951.83 : x
  2. Step 2: Convert to fraction form
    21,511.34/29,684.60 = 11,951.83/x
  3. Step 3: Cross multiply
    21,511.34x = 29,684.60 × 11,951.83
  4. Step 4: Simplify right side
    21,511.34x = 354,785,144.40
  5. Step 5: Solve for x
    x = 354,785,144.40/21,511.34
  6. Step 6: Final answer
    x = 16,492.94

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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.