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Finding the Fourth Proportional to 20,542.92, 30,800.46 and 8,055.12

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Solution

The fourth proportional to 20,542.92, 30,800.46 and 8,055.12 is: 12,077.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.92 : 30,800.46 = 8,055.12 : x
  2. Step 2: Convert to fraction form
    20,542.92/30,800.46 = 8,055.12/x
  3. Step 3: Cross multiply
    20,542.92x = 30,800.46 × 8,055.12
  4. Step 4: Simplify right side
    20,542.92x = 248,101,401.36
  5. Step 5: Solve for x
    x = 248,101,401.36/20,542.92
  6. Step 6: Final answer
    x = 12,077.22

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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.