Home / 30,765.22-42,456.56-18,027.56

Finding the Fourth Proportional to 30,765.22, 42,456.56 and 18,027.56

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Solution

The fourth proportional to 30,765.22, 42,456.56 and 18,027.56 is: 24,878.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.22 : 42,456.56 = 18,027.56 : x
  2. Step 2: Convert to fraction form
    30,765.22/42,456.56 = 18,027.56/x
  3. Step 3: Cross multiply
    30,765.22x = 42,456.56 × 18,027.56
  4. Step 4: Simplify right side
    30,765.22x = 765,388,198.80
  5. Step 5: Solve for x
    x = 765,388,198.80/30,765.22
  6. Step 6: Final answer
    x = 24,878.36

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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.