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Finding the Fourth Proportional to 20,601.81, 30,894.03 and 8,906.67

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Solution

The fourth proportional to 20,601.81, 30,894.03 and 8,906.67 is: 13,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.81 : 30,894.03 = 8,906.67 : x
  2. Step 2: Convert to fraction form
    20,601.81/30,894.03 = 8,906.67/x
  3. Step 3: Cross multiply
    20,601.81x = 30,894.03 × 8,906.67
  4. Step 4: Simplify right side
    20,601.81x = 275,162,930.18
  5. Step 5: Solve for x
    x = 275,162,930.18/20,601.81
  6. Step 6: Final answer
    x = 13,356.25

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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.