Home / 39,651.35-54,720.44-21,747

Finding the Fourth Proportional to 39,651.35, 54,720.44 and 21,747

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Solution

The fourth proportional to 39,651.35, 54,720.44 and 21,747 is: 30,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,651.35 : 54,720.44 = 21,747 : x
  2. Step 2: Convert to fraction form
    39,651.35/54,720.44 = 21,747/x
  3. Step 3: Cross multiply
    39,651.35x = 54,720.44 × 21,747
  4. Step 4: Simplify right side
    39,651.35x = 1,190,005,299.95
  5. Step 5: Solve for x
    x = 1,190,005,299.95/39,651.35
  6. Step 6: Final answer
    x = 30,011.73

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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.