Home / 37,287.54-51,456.78-20,520.54

Finding the Fourth Proportional to 37,287.54, 51,456.78 and 20,520.54

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Solution

The fourth proportional to 37,287.54, 51,456.78 and 20,520.54 is: 28,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,287.54 : 51,456.78 = 20,520.54 : x
  2. Step 2: Convert to fraction form
    37,287.54/51,456.78 = 20,520.54/x
  3. Step 3: Cross multiply
    37,287.54x = 51,456.78 × 20,520.54
  4. Step 4: Simplify right side
    37,287.54x = 1,055,920,912.26
  5. Step 5: Solve for x
    x = 1,055,920,912.26/37,287.54
  6. Step 6: Final answer
    x = 28,318.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.