Home / 31,760.78-43,829.16-18,149.44

Finding the Fourth Proportional to 31,760.78, 43,829.16 and 18,149.44

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Solution

The fourth proportional to 31,760.78, 43,829.16 and 18,149.44 is: 25,045.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,760.78 : 43,829.16 = 18,149.44 : x
  2. Step 2: Convert to fraction form
    31,760.78/43,829.16 = 18,149.44/x
  3. Step 3: Cross multiply
    31,760.78x = 43,829.16 × 18,149.44
  4. Step 4: Simplify right side
    31,760.78x = 795,474,709.67
  5. Step 5: Solve for x
    x = 795,474,709.67/31,760.78
  6. Step 6: Final answer
    x = 25,045.82

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1.5x scale

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.