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Finding the Fourth Proportional to 20,574.62, 30,869.61 and 8,103.33

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Solution

The fourth proportional to 20,574.62, 30,869.61 and 8,103.33 is: 12,158.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.62 : 30,869.61 = 8,103.33 : x
  2. Step 2: Convert to fraction form
    20,574.62/30,869.61 = 8,103.33/x
  3. Step 3: Cross multiply
    20,574.62x = 30,869.61 × 8,103.33
  4. Step 4: Simplify right side
    20,574.62x = 250,146,636.80
  5. Step 5: Solve for x
    x = 250,146,636.80/20,574.62
  6. Step 6: Final answer
    x = 12,158.02

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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.