Home / 20,413.79-30,622.61-7,934.76

Finding the Fourth Proportional to 20,413.79, 30,622.61 and 7,934.76

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Solution

The fourth proportional to 20,413.79, 30,622.61 and 7,934.76 is: 11,902.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.79 : 30,622.61 = 7,934.76 : x
  2. Step 2: Convert to fraction form
    20,413.79/30,622.61 = 7,934.76/x
  3. Step 3: Cross multiply
    20,413.79x = 30,622.61 × 7,934.76
  4. Step 4: Simplify right side
    20,413.79x = 242,983,021.25
  5. Step 5: Solve for x
    x = 242,983,021.25/20,413.79
  6. Step 6: Final answer
    x = 11,902.89

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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.