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Finding the Fourth Proportional to 20,251.94, 30,378.83 and 6,210.94

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Solution

The fourth proportional to 20,251.94, 30,378.83 and 6,210.94 is: 9,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.94 : 30,378.83 = 6,210.94 : x
  2. Step 2: Convert to fraction form
    20,251.94/30,378.83 = 6,210.94/x
  3. Step 3: Cross multiply
    20,251.94x = 30,378.83 × 6,210.94
  4. Step 4: Simplify right side
    20,251.94x = 188,681,090.40
  5. Step 5: Solve for x
    x = 188,681,090.40/20,251.94
  6. Step 6: Final answer
    x = 9,316.69

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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.