Home / 20,515.68-30,773.10-6,664.68

Finding the Fourth Proportional to 20,515.68, 30,773.10 and 6,664.68

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Solution

The fourth proportional to 20,515.68, 30,773.10 and 6,664.68 is: 9,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.68 : 30,773.10 = 6,664.68 : x
  2. Step 2: Convert to fraction form
    20,515.68/30,773.10 = 6,664.68/x
  3. Step 3: Cross multiply
    20,515.68x = 30,773.10 × 6,664.68
  4. Step 4: Simplify right side
    20,515.68x = 205,092,864.11
  5. Step 5: Solve for x
    x = 205,092,864.11/20,515.68
  6. Step 6: Final answer
    x = 9,996.88

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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.