Home / 21,224.75-31,837.01-5,429.76

Finding the Fourth Proportional to 21,224.75, 31,837.01 and 5,429.76

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Solution

The fourth proportional to 21,224.75, 31,837.01 and 5,429.76 is: 8,144.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.75 : 31,837.01 = 5,429.76 : x
  2. Step 2: Convert to fraction form
    21,224.75/31,837.01 = 5,429.76/x
  3. Step 3: Cross multiply
    21,224.75x = 31,837.01 × 5,429.76
  4. Step 4: Simplify right side
    21,224.75x = 172,867,323.42
  5. Step 5: Solve for x
    x = 172,867,323.42/21,224.75
  6. Step 6: Final answer
    x = 8,144.61

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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.