Home / 20,578.96-30,868.48-4,996.56

Finding the Fourth Proportional to 20,578.96, 30,868.48 and 4,996.56

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Solution

The fourth proportional to 20,578.96, 30,868.48 and 4,996.56 is: 7,494.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.96 : 30,868.48 = 4,996.56 : x
  2. Step 2: Convert to fraction form
    20,578.96/30,868.48 = 4,996.56/x
  3. Step 3: Cross multiply
    20,578.96x = 30,868.48 × 4,996.56
  4. Step 4: Simplify right side
    20,578.96x = 154,236,212.43
  5. Step 5: Solve for x
    x = 154,236,212.43/20,578.96
  6. Step 6: Final answer
    x = 7,494.85

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Double scale
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Similar ratio
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1.5x scale

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.