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Finding the Fourth Proportional to 20,394.54, 30,596.67 and 7,914.87

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Solution

The fourth proportional to 20,394.54, 30,596.67 and 7,914.87 is: 11,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,394.54 : 30,596.67 = 7,914.87 : x
  2. Step 2: Convert to fraction form
    20,394.54/30,596.67 = 7,914.87/x
  3. Step 3: Cross multiply
    20,394.54x = 30,596.67 × 7,914.87
  4. Step 4: Simplify right side
    20,394.54x = 242,168,665.48
  5. Step 5: Solve for x
    x = 242,168,665.48/20,394.54
  6. Step 6: Final answer
    x = 11,874.19

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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.