Home / 20,619.23-30,945.24-7,475.36

Finding the Fourth Proportional to 20,619.23, 30,945.24 and 7,475.36

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Solution

The fourth proportional to 20,619.23, 30,945.24 and 7,475.36 is: 11,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.23 : 30,945.24 = 7,475.36 : x
  2. Step 2: Convert to fraction form
    20,619.23/30,945.24 = 7,475.36/x
  3. Step 3: Cross multiply
    20,619.23x = 30,945.24 × 7,475.36
  4. Step 4: Simplify right side
    20,619.23x = 231,326,654.56
  5. Step 5: Solve for x
    x = 231,326,654.56/20,619.23
  6. Step 6: Final answer
    x = 11,218.98

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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.