Home / 31,630.70-43,654.65-18,201.61

Finding the Fourth Proportional to 31,630.70, 43,654.65 and 18,201.61

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Solution

The fourth proportional to 31,630.70, 43,654.65 and 18,201.61 is: 25,120.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,630.70 : 43,654.65 = 18,201.61 : x
  2. Step 2: Convert to fraction form
    31,630.70/43,654.65 = 18,201.61/x
  3. Step 3: Cross multiply
    31,630.70x = 43,654.65 × 18,201.61
  4. Step 4: Simplify right side
    31,630.70x = 794,584,900.30
  5. Step 5: Solve for x
    x = 794,584,900.30/31,630.70
  6. Step 6: Final answer
    x = 25,120.68

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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.