Home / 20,736.72-31,098.36-6,882

Finding the Fourth Proportional to 20,736.72, 31,098.36 and 6,882

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Solution

The fourth proportional to 20,736.72, 31,098.36 and 6,882 is: 10,320.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.72 : 31,098.36 = 6,882 : x
  2. Step 2: Convert to fraction form
    20,736.72/31,098.36 = 6,882/x
  3. Step 3: Cross multiply
    20,736.72x = 31,098.36 × 6,882
  4. Step 4: Simplify right side
    20,736.72x = 214,018,913.52
  5. Step 5: Solve for x
    x = 214,018,913.52/20,736.72
  6. Step 6: Final answer
    x = 10,320.77

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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.