Home / 21,839.88-32,698.20-21,140.04

Finding the Fourth Proportional to 21,839.88, 32,698.20 and 21,140.04

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Solution

The fourth proportional to 21,839.88, 32,698.20 and 21,140.04 is: 31,650.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.88 : 32,698.20 = 21,140.04 : x
  2. Step 2: Convert to fraction form
    21,839.88/32,698.20 = 21,140.04/x
  3. Step 3: Cross multiply
    21,839.88x = 32,698.20 × 21,140.04
  4. Step 4: Simplify right side
    21,839.88x = 691,241,255.93
  5. Step 5: Solve for x
    x = 691,241,255.93/21,839.88
  6. Step 6: Final answer
    x = 31,650.41

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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.