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Finding the Fourth Proportional to 20,601.98, 30,904.20 and 5,812.04

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Solution

The fourth proportional to 20,601.98, 30,904.20 and 5,812.04 is: 8,718.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.98 : 30,904.20 = 5,812.04 : x
  2. Step 2: Convert to fraction form
    20,601.98/30,904.20 = 5,812.04/x
  3. Step 3: Cross multiply
    20,601.98x = 30,904.20 × 5,812.04
  4. Step 4: Simplify right side
    20,601.98x = 179,616,446.57
  5. Step 5: Solve for x
    x = 179,616,446.57/20,601.98
  6. Step 6: Final answer
    x = 8,718.41

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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.