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Finding the Fourth Proportional to 20,609.82, 30,917.12 and 6,564.92

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Solution

The fourth proportional to 20,609.82, 30,917.12 and 6,564.92 is: 9,848.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.82 : 30,917.12 = 6,564.92 : x
  2. Step 2: Convert to fraction form
    20,609.82/30,917.12 = 6,564.92/x
  3. Step 3: Cross multiply
    20,609.82x = 30,917.12 × 6,564.92
  4. Step 4: Simplify right side
    20,609.82x = 202,968,232.02
  5. Step 5: Solve for x
    x = 202,968,232.02/20,609.82
  6. Step 6: Final answer
    x = 9,848.13

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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.