Home / 20,648.97-30,968.60-7,320.83

Finding the Fourth Proportional to 20,648.97, 30,968.60 and 7,320.83

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Solution

The fourth proportional to 20,648.97, 30,968.60 and 7,320.83 is: 10,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.97 : 30,968.60 = 7,320.83 : x
  2. Step 2: Convert to fraction form
    20,648.97/30,968.60 = 7,320.83/x
  3. Step 3: Cross multiply
    20,648.97x = 30,968.60 × 7,320.83
  4. Step 4: Simplify right side
    20,648.97x = 226,715,664.49
  5. Step 5: Solve for x
    x = 226,715,664.49/20,648.97
  6. Step 6: Final answer
    x = 10,979.51

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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.