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Finding the Fourth Proportional to 20,124.75, 30,188.79 and 6,273.75

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Solution

The fourth proportional to 20,124.75, 30,188.79 and 6,273.75 is: 9,411.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.75 : 30,188.79 = 6,273.75 : x
  2. Step 2: Convert to fraction form
    20,124.75/30,188.79 = 6,273.75/x
  3. Step 3: Cross multiply
    20,124.75x = 30,188.79 × 6,273.75
  4. Step 4: Simplify right side
    20,124.75x = 189,396,921.26
  5. Step 5: Solve for x
    x = 189,396,921.26/20,124.75
  6. Step 6: Final answer
    x = 9,411.14

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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.