Home / 18,722,103.90-28,085,877.45-7,939,383.90

Finding the Fourth Proportional to 18,722,103.90, 28,085,877.45 and 7,939,383.90

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Solution

The fourth proportional to 18,722,103.90, 28,085,877.45 and 7,939,383.90 is: 11,910,229.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,103.90 : 28,085,877.45 = 7,939,383.90 : x
  2. Step 2: Convert to fraction form
    18,722,103.90/28,085,877.45 = 7,939,383.90/x
  3. Step 3: Cross multiply
    18,722,103.90x = 28,085,877.45 × 7,939,383.90
  4. Step 4: Simplify right side
    18,722,103.90x = 222,984,563,243,903.06
  5. Step 5: Solve for x
    x = 222,984,563,243,903.06/18,722,103.90
  6. Step 6: Final answer
    x = 11,910,229.98

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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.