Home / 21,295,021.75-29,387,130.03-12,128,517.43

Finding the Fourth Proportional to 21,295,021.75, 29,387,130.03 and 12,128,517.43

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Solution

The fourth proportional to 21,295,021.75, 29,387,130.03 and 12,128,517.43 is: 16,737,354.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295,021.75 : 29,387,130.03 = 12,128,517.43 : x
  2. Step 2: Convert to fraction form
    21,295,021.75/29,387,130.03 = 12,128,517.43/x
  3. Step 3: Cross multiply
    21,295,021.75x = 29,387,130.03 × 12,128,517.43
  4. Step 4: Simplify right side
    21,295,021.75x = 356,422,318,786,531.44
  5. Step 5: Solve for x
    x = 356,422,318,786,531.44/21,295,021.75
  6. Step 6: Final answer
    x = 16,737,354.06

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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.