Home / 39,914.88-59,871.84-13,638

Finding the Fourth Proportional to 39,914.88, 59,871.84 and 13,638

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Solution

The fourth proportional to 39,914.88, 59,871.84 and 13,638 is: 20,456.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,914.88 : 59,871.84 = 13,638 : x
  2. Step 2: Convert to fraction form
    39,914.88/59,871.84 = 13,638/x
  3. Step 3: Cross multiply
    39,914.88x = 59,871.84 × 13,638
  4. Step 4: Simplify right side
    39,914.88x = 816,532,153.92
  5. Step 5: Solve for x
    x = 816,532,153.92/39,914.88
  6. Step 6: Final answer
    x = 20,456.84

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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.