Home / 20,734.26-31,101.60-5,151.90

Finding the Fourth Proportional to 20,734.26, 31,101.60 and 5,151.90

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Solution

The fourth proportional to 20,734.26, 31,101.60 and 5,151.90 is: 7,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.26 : 31,101.60 = 5,151.90 : x
  2. Step 2: Convert to fraction form
    20,734.26/31,101.60 = 5,151.90/x
  3. Step 3: Cross multiply
    20,734.26x = 31,101.60 × 5,151.90
  4. Step 4: Simplify right side
    20,734.26x = 160,232,333.04
  5. Step 5: Solve for x
    x = 160,232,333.04/20,734.26
  6. Step 6: Final answer
    x = 7,727.90

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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.