Home / 20,372.45-30,555.39-5,577.90

Finding the Fourth Proportional to 20,372.45, 30,555.39 and 5,577.90

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Solution

The fourth proportional to 20,372.45, 30,555.39 and 5,577.90 is: 8,365.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.45 : 30,555.39 = 5,577.90 : x
  2. Step 2: Convert to fraction form
    20,372.45/30,555.39 = 5,577.90/x
  3. Step 3: Cross multiply
    20,372.45x = 30,555.39 × 5,577.90
  4. Step 4: Simplify right side
    20,372.45x = 170,435,018.27
  5. Step 5: Solve for x
    x = 170,435,018.27/20,372.45
  6. Step 6: Final answer
    x = 8,365.96

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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.