Home / 20,456.53-30,696.63-8,609.38

Finding the Fourth Proportional to 20,456.53, 30,696.63 and 8,609.38

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Solution

The fourth proportional to 20,456.53, 30,696.63 and 8,609.38 is: 12,919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.53 : 30,696.63 = 8,609.38 : x
  2. Step 2: Convert to fraction form
    20,456.53/30,696.63 = 8,609.38/x
  3. Step 3: Cross multiply
    20,456.53x = 30,696.63 × 8,609.38
  4. Step 4: Simplify right side
    20,456.53x = 264,278,952.39
  5. Step 5: Solve for x
    x = 264,278,952.39/20,456.53
  6. Step 6: Final answer
    x = 12,919.05

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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.