Home / 21,115.34-31,682.22-10,029.86

Finding the Fourth Proportional to 21,115.34, 31,682.22 and 10,029.86

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Solution

The fourth proportional to 21,115.34, 31,682.22 and 10,029.86 is: 15,049.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115.34 : 31,682.22 = 10,029.86 : x
  2. Step 2: Convert to fraction form
    21,115.34/31,682.22 = 10,029.86/x
  3. Step 3: Cross multiply
    21,115.34x = 31,682.22 × 10,029.86
  4. Step 4: Simplify right side
    21,115.34x = 317,768,231.09
  5. Step 5: Solve for x
    x = 317,768,231.09/21,115.34
  6. Step 6: Final answer
    x = 15,049.16

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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.