Home / 21,135,419.20-31,693,136.16-8,187,634.16

Finding the Fourth Proportional to 21,135,419.20, 31,693,136.16 and 8,187,634.16

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Solution

The fourth proportional to 21,135,419.20, 31,693,136.16 and 8,187,634.16 is: 12,277,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135,419.20 : 31,693,136.16 = 8,187,634.16 : x
  2. Step 2: Convert to fraction form
    21,135,419.20/31,693,136.16 = 8,187,634.16/x
  3. Step 3: Cross multiply
    21,135,419.20x = 31,693,136.16 × 8,187,634.16
  4. Step 4: Simplify right side
    21,135,419.20x = 259,491,804,261,147.22
  5. Step 5: Solve for x
    x = 259,491,804,261,147.22/21,135,419.20
  6. Step 6: Final answer
    x = 12,277,580.20

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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.