Home / 20,863.62-31,273.56-7,707.60

Finding the Fourth Proportional to 20,863.62, 31,273.56 and 7,707.60

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Solution

The fourth proportional to 20,863.62, 31,273.56 and 7,707.60 is: 11,553.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.62 : 31,273.56 = 7,707.60 : x
  2. Step 2: Convert to fraction form
    20,863.62/31,273.56 = 7,707.60/x
  3. Step 3: Cross multiply
    20,863.62x = 31,273.56 × 7,707.60
  4. Step 4: Simplify right side
    20,863.62x = 241,044,091.06
  5. Step 5: Solve for x
    x = 241,044,091.06/20,863.62
  6. Step 6: Final answer
    x = 11,553.32

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1.5x scale

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.