Home / 30,940.53-42,716.25-20,348.43

Finding the Fourth Proportional to 30,940.53, 42,716.25 and 20,348.43

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Solution

The fourth proportional to 30,940.53, 42,716.25 and 20,348.43 is: 28,092.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,940.53 : 42,716.25 = 20,348.43 : x
  2. Step 2: Convert to fraction form
    30,940.53/42,716.25 = 20,348.43/x
  3. Step 3: Cross multiply
    30,940.53x = 42,716.25 × 20,348.43
  4. Step 4: Simplify right side
    30,940.53x = 869,208,622.99
  5. Step 5: Solve for x
    x = 869,208,622.99/30,940.53
  6. Step 6: Final answer
    x = 28,092.88

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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.