Home / 20,086.77-30,143.97-6,939.17

Finding the Fourth Proportional to 20,086.77, 30,143.97 and 6,939.17

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Solution

The fourth proportional to 20,086.77, 30,143.97 and 6,939.17 is: 10,413.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.77 : 30,143.97 = 6,939.17 : x
  2. Step 2: Convert to fraction form
    20,086.77/30,143.97 = 6,939.17/x
  3. Step 3: Cross multiply
    20,086.77x = 30,143.97 × 6,939.17
  4. Step 4: Simplify right side
    20,086.77x = 209,173,981.59
  5. Step 5: Solve for x
    x = 209,173,981.59/20,086.77
  6. Step 6: Final answer
    x = 10,413.52

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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.