Home / 20,734.97-31,102.43-5,152.59

Finding the Fourth Proportional to 20,734.97, 31,102.43 and 5,152.59

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Solution

The fourth proportional to 20,734.97, 31,102.43 and 5,152.59 is: 7,728.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.97 : 31,102.43 = 5,152.59 : x
  2. Step 2: Convert to fraction form
    20,734.97/31,102.43 = 5,152.59/x
  3. Step 3: Cross multiply
    20,734.97x = 31,102.43 × 5,152.59
  4. Step 4: Simplify right side
    20,734.97x = 160,258,044.03
  5. Step 5: Solve for x
    x = 160,258,044.03/20,734.97
  6. Step 6: Final answer
    x = 7,728.88

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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.