Home / 21,095.29-31,640.73-5,512.87

Finding the Fourth Proportional to 21,095.29, 31,640.73 and 5,512.87

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Solution

The fourth proportional to 21,095.29, 31,640.73 and 5,512.87 is: 8,268.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.29 : 31,640.73 = 5,512.87 : x
  2. Step 2: Convert to fraction form
    21,095.29/31,640.73 = 5,512.87/x
  3. Step 3: Cross multiply
    21,095.29x = 31,640.73 × 5,512.87
  4. Step 4: Simplify right side
    21,095.29x = 174,431,231.20
  5. Step 5: Solve for x
    x = 174,431,231.20/21,095.29
  6. Step 6: Final answer
    x = 8,268.73

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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.