Home / 40,505.82-60,739.89-12,418.66

Finding the Fourth Proportional to 40,505.82, 60,739.89 and 12,418.66

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Solution

The fourth proportional to 40,505.82, 60,739.89 and 12,418.66 is: 18,622.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,505.82 : 60,739.89 = 12,418.66 : x
  2. Step 2: Convert to fraction form
    40,505.82/60,739.89 = 12,418.66/x
  3. Step 3: Cross multiply
    40,505.82x = 60,739.89 × 12,418.66
  4. Step 4: Simplify right side
    40,505.82x = 754,308,042.35
  5. Step 5: Solve for x
    x = 754,308,042.35/40,505.82
  6. Step 6: Final answer
    x = 18,622.21

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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.