Home / 20,201.49-30,301.41-7,721.01

Finding the Fourth Proportional to 20,201.49, 30,301.41 and 7,721.01

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Solution

The fourth proportional to 20,201.49, 30,301.41 and 7,721.01 is: 11,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.49 : 30,301.41 = 7,721.01 : x
  2. Step 2: Convert to fraction form
    20,201.49/30,301.41 = 7,721.01/x
  3. Step 3: Cross multiply
    20,201.49x = 30,301.41 × 7,721.01
  4. Step 4: Simplify right side
    20,201.49x = 233,957,489.62
  5. Step 5: Solve for x
    x = 233,957,489.62/20,201.49
  6. Step 6: Final answer
    x = 11,581.20

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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.