Home / 20,306.97-30,460.32-5,515.83

Finding the Fourth Proportional to 20,306.97, 30,460.32 and 5,515.83

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Solution

The fourth proportional to 20,306.97, 30,460.32 and 5,515.83 is: 8,273.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.97 : 30,460.32 = 5,515.83 : x
  2. Step 2: Convert to fraction form
    20,306.97/30,460.32 = 5,515.83/x
  3. Step 3: Cross multiply
    20,306.97x = 30,460.32 × 5,515.83
  4. Step 4: Simplify right side
    20,306.97x = 168,013,946.87
  5. Step 5: Solve for x
    x = 168,013,946.87/20,306.97
  6. Step 6: Final answer
    x = 8,273.71

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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.