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Finding the Fourth Proportional to 20,053.92, 30,079.60 and 6,906.56

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Solution

The fourth proportional to 20,053.92, 30,079.60 and 6,906.56 is: 10,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,053.92 : 30,079.60 = 6,906.56 : x
  2. Step 2: Convert to fraction form
    20,053.92/30,079.60 = 6,906.56/x
  3. Step 3: Cross multiply
    20,053.92x = 30,079.60 × 6,906.56
  4. Step 4: Simplify right side
    20,053.92x = 207,746,562.18
  5. Step 5: Solve for x
    x = 207,746,562.18/20,053.92
  6. Step 6: Final answer
    x = 10,359.40

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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.