Home / 21,134.84-31,697.66-6,339.78

Finding the Fourth Proportional to 21,134.84, 31,697.66 and 6,339.78

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Solution

The fourth proportional to 21,134.84, 31,697.66 and 6,339.78 is: 9,508.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.84 : 31,697.66 = 6,339.78 : x
  2. Step 2: Convert to fraction form
    21,134.84/31,697.66 = 6,339.78/x
  3. Step 3: Cross multiply
    21,134.84x = 31,697.66 × 6,339.78
  4. Step 4: Simplify right side
    21,134.84x = 200,956,190.91
  5. Step 5: Solve for x
    x = 200,956,190.91/21,134.84
  6. Step 6: Final answer
    x = 9,508.29

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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.