Home / 20,343.24-30,508.38-6,489

Finding the Fourth Proportional to 20,343.24, 30,508.38 and 6,489

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Solution

The fourth proportional to 20,343.24, 30,508.38 and 6,489 is: 9,731.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.24 : 30,508.38 = 6,489 : x
  2. Step 2: Convert to fraction form
    20,343.24/30,508.38 = 6,489/x
  3. Step 3: Cross multiply
    20,343.24x = 30,508.38 × 6,489
  4. Step 4: Simplify right side
    20,343.24x = 197,968,877.82
  5. Step 5: Solve for x
    x = 197,968,877.82/20,343.24
  6. Step 6: Final answer
    x = 9,731.43

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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.