Home / 31,835.13-43,930.60-18,405.43

Finding the Fourth Proportional to 31,835.13, 43,930.60 and 18,405.43

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Solution

The fourth proportional to 31,835.13, 43,930.60 and 18,405.43 is: 25,398.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,835.13 : 43,930.60 = 18,405.43 : x
  2. Step 2: Convert to fraction form
    31,835.13/43,930.60 = 18,405.43/x
  3. Step 3: Cross multiply
    31,835.13x = 43,930.60 × 18,405.43
  4. Step 4: Simplify right side
    31,835.13x = 808,561,530.85
  5. Step 5: Solve for x
    x = 808,561,530.85/31,835.13
  6. Step 6: Final answer
    x = 25,398.41

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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.