Home / 20,759.14-31,138.38-9,659.62

Finding the Fourth Proportional to 20,759.14, 31,138.38 and 9,659.62

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Solution

The fourth proportional to 20,759.14, 31,138.38 and 9,659.62 is: 14,489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.14 : 31,138.38 = 9,659.62 : x
  2. Step 2: Convert to fraction form
    20,759.14/31,138.38 = 9,659.62/x
  3. Step 3: Cross multiply
    20,759.14x = 31,138.38 × 9,659.62
  4. Step 4: Simplify right side
    20,759.14x = 300,784,918.22
  5. Step 5: Solve for x
    x = 300,784,918.22/20,759.14
  6. Step 6: Final answer
    x = 14,489.28

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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.