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Finding the Fourth Proportional to 20,574.30, 30,861.45 and 6,723.30

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Solution

The fourth proportional to 20,574.30, 30,861.45 and 6,723.30 is: 10,084.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.30 : 30,861.45 = 6,723.30 : x
  2. Step 2: Convert to fraction form
    20,574.30/30,861.45 = 6,723.30/x
  3. Step 3: Cross multiply
    20,574.30x = 30,861.45 × 6,723.30
  4. Step 4: Simplify right side
    20,574.30x = 207,490,786.79
  5. Step 5: Solve for x
    x = 207,490,786.79/20,574.30
  6. Step 6: Final answer
    x = 10,084.95

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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.