Home / 20,620.31-30,930.44-5,037.93

Finding the Fourth Proportional to 20,620.31, 30,930.44 and 5,037.93

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Solution

The fourth proportional to 20,620.31, 30,930.44 and 5,037.93 is: 7,556.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.31 : 30,930.44 = 5,037.93 : x
  2. Step 2: Convert to fraction form
    20,620.31/30,930.44 = 5,037.93/x
  3. Step 3: Cross multiply
    20,620.31x = 30,930.44 × 5,037.93
  4. Step 4: Simplify right side
    20,620.31x = 155,825,366.40
  5. Step 5: Solve for x
    x = 155,825,366.40/20,620.31
  6. Step 6: Final answer
    x = 7,556.89

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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.