Home / 39,783.62-54,902.82-21,880.02

Finding the Fourth Proportional to 39,783.62, 54,902.82 and 21,880.02

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Solution

The fourth proportional to 39,783.62, 54,902.82 and 21,880.02 is: 30,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,783.62 : 54,902.82 = 21,880.02 : x
  2. Step 2: Convert to fraction form
    39,783.62/54,902.82 = 21,880.02/x
  3. Step 3: Cross multiply
    39,783.62x = 54,902.82 × 21,880.02
  4. Step 4: Simplify right side
    39,783.62x = 1,201,274,799.66
  5. Step 5: Solve for x
    x = 1,201,274,799.66/39,783.62
  6. Step 6: Final answer
    x = 30,195.21

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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.