Home / 20,619.50-30,945.64-7,475.62

Finding the Fourth Proportional to 20,619.50, 30,945.64 and 7,475.62

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Solution

The fourth proportional to 20,619.50, 30,945.64 and 7,475.62 is: 11,219.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.50 : 30,945.64 = 7,475.62 : x
  2. Step 2: Convert to fraction form
    20,619.50/30,945.64 = 7,475.62/x
  3. Step 3: Cross multiply
    20,619.50x = 30,945.64 × 7,475.62
  4. Step 4: Simplify right side
    20,619.50x = 231,337,845.30
  5. Step 5: Solve for x
    x = 231,337,845.30/20,619.50
  6. Step 6: Final answer
    x = 11,219.37

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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.