Home / 38,481.16-57,721.42-20,720.14

Finding the Fourth Proportional to 38,481.16, 57,721.42 and 20,720.14

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Solution

The fourth proportional to 38,481.16, 57,721.42 and 20,720.14 is: 31,080.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,481.16 : 57,721.42 = 20,720.14 : x
  2. Step 2: Convert to fraction form
    38,481.16/57,721.42 = 20,720.14/x
  3. Step 3: Cross multiply
    38,481.16x = 57,721.42 × 20,720.14
  4. Step 4: Simplify right side
    38,481.16x = 1,195,995,903.40
  5. Step 5: Solve for x
    x = 1,195,995,903.40/38,481.16
  6. Step 6: Final answer
    x = 31,080.04

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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.