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Finding the Fourth Proportional to 20,469.52, 30,707.73 and 6,426.82

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Solution

The fourth proportional to 20,469.52, 30,707.73 and 6,426.82 is: 9,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.52 : 30,707.73 = 6,426.82 : x
  2. Step 2: Convert to fraction form
    20,469.52/30,707.73 = 6,426.82/x
  3. Step 3: Cross multiply
    20,469.52x = 30,707.73 × 6,426.82
  4. Step 4: Simplify right side
    20,469.52x = 197,353,053.32
  5. Step 5: Solve for x
    x = 197,353,053.32/20,469.52
  6. Step 6: Final answer
    x = 9,641.31

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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.