Home / 20,654.76-30,981.87-5,072.25

Finding the Fourth Proportional to 20,654.76, 30,981.87 and 5,072.25

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Solution

The fourth proportional to 20,654.76, 30,981.87 and 5,072.25 is: 7,608.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.76 : 30,981.87 = 5,072.25 : x
  2. Step 2: Convert to fraction form
    20,654.76/30,981.87 = 5,072.25/x
  3. Step 3: Cross multiply
    20,654.76x = 30,981.87 × 5,072.25
  4. Step 4: Simplify right side
    20,654.76x = 157,147,790.11
  5. Step 5: Solve for x
    x = 157,147,790.11/20,654.76
  6. Step 6: Final answer
    x = 7,608.31

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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.