Home / 31,845.12-47,786.88-11,083.20

Finding the Fourth Proportional to 31,845.12, 47,786.88 and 11,083.20

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Solution

The fourth proportional to 31,845.12, 47,786.88 and 11,083.20 is: 16,631.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,845.12 : 47,786.88 = 11,083.20 : x
  2. Step 2: Convert to fraction form
    31,845.12/47,786.88 = 11,083.20/x
  3. Step 3: Cross multiply
    31,845.12x = 47,786.88 × 11,083.20
  4. Step 4: Simplify right side
    31,845.12x = 529,631,548.42
  5. Step 5: Solve for x
    x = 529,631,548.42/31,845.12
  6. Step 6: Final answer
    x = 16,631.48

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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.