Home / 37,782.40-52,138.40-20,786.56

Finding the Fourth Proportional to 37,782.40, 52,138.40 and 20,786.56

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Solution

The fourth proportional to 37,782.40, 52,138.40 and 20,786.56 is: 28,684.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,782.40 : 52,138.40 = 20,786.56 : x
  2. Step 2: Convert to fraction form
    37,782.40/52,138.40 = 20,786.56/x
  3. Step 3: Cross multiply
    37,782.40x = 52,138.40 × 20,786.56
  4. Step 4: Simplify right side
    37,782.40x = 1,083,777,979.90
  5. Step 5: Solve for x
    x = 1,083,777,979.90/37,782.40
  6. Step 6: Final answer
    x = 28,684.73

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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.