Home / 21,135,420.20-31,693,137.66-8,187,635.16

Finding the Fourth Proportional to 21,135,420.20, 31,693,137.66 and 8,187,635.16

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Solution

The fourth proportional to 21,135,420.20, 31,693,137.66 and 8,187,635.16 is: 12,277,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135,420.20 : 31,693,137.66 = 8,187,635.16 : x
  2. Step 2: Convert to fraction form
    21,135,420.20/31,693,137.66 = 8,187,635.16/x
  3. Step 3: Cross multiply
    21,135,420.20x = 31,693,137.66 × 8,187,635.16
  4. Step 4: Simplify right side
    21,135,420.20x = 259,491,848,235,736.12
  5. Step 5: Solve for x
    x = 259,491,848,235,736.12/21,135,420.20
  6. Step 6: Final answer
    x = 12,277,581.70

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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.