Home / 21,063.76-31,595.68-5,481.36

Finding the Fourth Proportional to 21,063.76, 31,595.68 and 5,481.36

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Solution

The fourth proportional to 21,063.76, 31,595.68 and 5,481.36 is: 8,222.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.76 : 31,595.68 = 5,481.36 : x
  2. Step 2: Convert to fraction form
    21,063.76/31,595.68 = 5,481.36/x
  3. Step 3: Cross multiply
    21,063.76x = 31,595.68 × 5,481.36
  4. Step 4: Simplify right side
    21,063.76x = 173,187,296.52
  5. Step 5: Solve for x
    x = 173,187,296.52/21,063.76
  6. Step 6: Final answer
    x = 8,222.05

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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.