Home / 21,093.92-31,640.88-5,511.56

Finding the Fourth Proportional to 21,093.92, 31,640.88 and 5,511.56

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Solution

The fourth proportional to 21,093.92, 31,640.88 and 5,511.56 is: 8,267.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.92 : 31,640.88 = 5,511.56 : x
  2. Step 2: Convert to fraction form
    21,093.92/31,640.88 = 5,511.56/x
  3. Step 3: Cross multiply
    21,093.92x = 31,640.88 × 5,511.56
  4. Step 4: Simplify right side
    21,093.92x = 174,390,608.57
  5. Step 5: Solve for x
    x = 174,390,608.57/21,093.92
  6. Step 6: Final answer
    x = 8,267.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.