Home / 38,514.80-57,788.40-20,997.20

Finding the Fourth Proportional to 38,514.80, 57,788.40 and 20,997.20

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Solution

The fourth proportional to 38,514.80, 57,788.40 and 20,997.20 is: 31,504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,514.80 : 57,788.40 = 20,997.20 : x
  2. Step 2: Convert to fraction form
    38,514.80/57,788.40 = 20,997.20/x
  3. Step 3: Cross multiply
    38,514.80x = 57,788.40 × 20,997.20
  4. Step 4: Simplify right side
    38,514.80x = 1,213,394,592.48
  5. Step 5: Solve for x
    x = 1,213,394,592.48/38,514.80
  6. Step 6: Final answer
    x = 31,504.63

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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.