Home / 20,725.70-31,052.10-17,007.80

Finding the Fourth Proportional to 20,725.70, 31,052.10 and 17,007.80

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Solution

The fourth proportional to 20,725.70, 31,052.10 and 17,007.80 is: 25,481.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.70 : 31,052.10 = 17,007.80 : x
  2. Step 2: Convert to fraction form
    20,725.70/31,052.10 = 17,007.80/x
  3. Step 3: Cross multiply
    20,725.70x = 31,052.10 × 17,007.80
  4. Step 4: Simplify right side
    20,725.70x = 528,127,906.38
  5. Step 5: Solve for x
    x = 528,127,906.38/20,725.70
  6. Step 6: Final answer
    x = 25,481.79

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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.