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Finding the Fourth Proportional to 20,410.60, 30,608.70 and 9,322.60

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Solution

The fourth proportional to 20,410.60, 30,608.70 and 9,322.60 is: 13,980.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.60 : 30,608.70 = 9,322.60 : x
  2. Step 2: Convert to fraction form
    20,410.60/30,608.70 = 9,322.60/x
  3. Step 3: Cross multiply
    20,410.60x = 30,608.70 × 9,322.60
  4. Step 4: Simplify right side
    20,410.60x = 285,352,666.62
  5. Step 5: Solve for x
    x = 285,352,666.62/20,410.60
  6. Step 6: Final answer
    x = 13,980.61

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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.