Home / 20,619.48-30,945.62-7,475.60

Finding the Fourth Proportional to 20,619.48, 30,945.62 and 7,475.60

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Solution

The fourth proportional to 20,619.48, 30,945.62 and 7,475.60 is: 11,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.48 : 30,945.62 = 7,475.60 : x
  2. Step 2: Convert to fraction form
    20,619.48/30,945.62 = 7,475.60/x
  3. Step 3: Cross multiply
    20,619.48x = 30,945.62 × 7,475.60
  4. Step 4: Simplify right side
    20,619.48x = 231,337,076.87
  5. Step 5: Solve for x
    x = 231,337,076.87/20,619.48
  6. Step 6: Final answer
    x = 11,219.35

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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.