Home / 20,771,862.20-28,665,258.77-11,352,843.44

Finding the Fourth Proportional to 20,771,862.20, 28,665,258.77 and 11,352,843.44

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Solution

The fourth proportional to 20,771,862.20, 28,665,258.77 and 11,352,843.44 is: 15,666,972.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,862.20 : 28,665,258.77 = 11,352,843.44 : x
  2. Step 2: Convert to fraction form
    20,771,862.20/28,665,258.77 = 11,352,843.44/x
  3. Step 3: Cross multiply
    20,771,862.20x = 28,665,258.77 × 11,352,843.44
  4. Step 4: Simplify right side
    20,771,862.20x = 325,432,194,854,469.62
  5. Step 5: Solve for x
    x = 325,432,194,854,469.62/20,771,862.20
  6. Step 6: Final answer
    x = 15,666,972.55

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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.