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Finding the Fourth Proportional to 20,628.96, 30,945.60 and 6,585.60

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Solution

The fourth proportional to 20,628.96, 30,945.60 and 6,585.60 is: 9,879.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.96 : 30,945.60 = 6,585.60 : x
  2. Step 2: Convert to fraction form
    20,628.96/30,945.60 = 6,585.60/x
  3. Step 3: Cross multiply
    20,628.96x = 30,945.60 × 6,585.60
  4. Step 4: Simplify right side
    20,628.96x = 203,795,343.36
  5. Step 5: Solve for x
    x = 203,795,343.36/20,628.96
  6. Step 6: Final answer
    x = 9,879.09

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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.