Home / 20,523.96-30,778.38-7,372.80

Finding the Fourth Proportional to 20,523.96, 30,778.38 and 7,372.80

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Solution

The fourth proportional to 20,523.96, 30,778.38 and 7,372.80 is: 11,056.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.96 : 30,778.38 = 7,372.80 : x
  2. Step 2: Convert to fraction form
    20,523.96/30,778.38 = 7,372.80/x
  3. Step 3: Cross multiply
    20,523.96x = 30,778.38 × 7,372.80
  4. Step 4: Simplify right side
    20,523.96x = 226,922,840.06
  5. Step 5: Solve for x
    x = 226,922,840.06/20,523.96
  6. Step 6: Final answer
    x = 11,056.48

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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.