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Finding the Fourth Proportional to 20,601.34, 30,891.93 and 7,451.74

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Solution

The fourth proportional to 20,601.34, 30,891.93 and 7,451.74 is: 11,173.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.34 : 30,891.93 = 7,451.74 : x
  2. Step 2: Convert to fraction form
    20,601.34/30,891.93 = 7,451.74/x
  3. Step 3: Cross multiply
    20,601.34x = 30,891.93 × 7,451.74
  4. Step 4: Simplify right side
    20,601.34x = 230,198,630.46
  5. Step 5: Solve for x
    x = 230,198,630.46/20,601.34
  6. Step 6: Final answer
    x = 11,173.96

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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.