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Finding the Fourth Proportional to 20,574.13, 30,861.20 and 6,723.13

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Solution

The fourth proportional to 20,574.13, 30,861.20 and 6,723.13 is: 10,084.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.13 : 30,861.20 = 6,723.13 : x
  2. Step 2: Convert to fraction form
    20,574.13/30,861.20 = 6,723.13/x
  3. Step 3: Cross multiply
    20,574.13x = 30,861.20 × 6,723.13
  4. Step 4: Simplify right side
    20,574.13x = 207,483,859.56
  5. Step 5: Solve for x
    x = 207,483,859.56/20,574.13
  6. Step 6: Final answer
    x = 10,084.70

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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.