Home / 21,090.92-31,636.38-5,508.52

Finding the Fourth Proportional to 21,090.92, 31,636.38 and 5,508.52

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Solution

The fourth proportional to 21,090.92, 31,636.38 and 5,508.52 is: 8,262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,090.92 : 31,636.38 = 5,508.52 : x
  2. Step 2: Convert to fraction form
    21,090.92/31,636.38 = 5,508.52/x
  3. Step 3: Cross multiply
    21,090.92x = 31,636.38 × 5,508.52
  4. Step 4: Simplify right side
    21,090.92x = 174,269,631.96
  5. Step 5: Solve for x
    x = 174,269,631.96/21,090.92
  6. Step 6: Final answer
    x = 8,262.78

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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.