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Finding the Fourth Proportional to 20,549.70, 30,806.04 and 7,392.84

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Solution

The fourth proportional to 20,549.70, 30,806.04 and 7,392.84 is: 11,082.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.70 : 30,806.04 = 7,392.84 : x
  2. Step 2: Convert to fraction form
    20,549.70/30,806.04 = 7,392.84/x
  3. Step 3: Cross multiply
    20,549.70x = 30,806.04 × 7,392.84
  4. Step 4: Simplify right side
    20,549.70x = 227,744,124.75
  5. Step 5: Solve for x
    x = 227,744,124.75/20,549.70
  6. Step 6: Final answer
    x = 11,082.60

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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.