Home / 39,907.96-59,879.34-21,418.36

Finding the Fourth Proportional to 39,907.96, 59,879.34 and 21,418.36

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Solution

The fourth proportional to 39,907.96, 59,879.34 and 21,418.36 is: 32,136.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,907.96 : 59,879.34 = 21,418.36 : x
  2. Step 2: Convert to fraction form
    39,907.96/59,879.34 = 21,418.36/x
  3. Step 3: Cross multiply
    39,907.96x = 59,879.34 × 21,418.36
  4. Step 4: Simplify right side
    39,907.96x = 1,282,517,260.68
  5. Step 5: Solve for x
    x = 1,282,517,260.68/39,907.96
  6. Step 6: Final answer
    x = 32,136.88

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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.