Home / 31,378.24-43,302-17,231.80

Finding the Fourth Proportional to 31,378.24, 43,302 and 17,231.80

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Solution

The fourth proportional to 31,378.24, 43,302 and 17,231.80 is: 23,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.24 : 43,302 = 17,231.80 : x
  2. Step 2: Convert to fraction form
    31,378.24/43,302 = 17,231.80/x
  3. Step 3: Cross multiply
    31,378.24x = 43,302 × 17,231.80
  4. Step 4: Simplify right side
    31,378.24x = 746,171,403.60
  5. Step 5: Solve for x
    x = 746,171,403.60/31,378.24
  6. Step 6: Final answer
    x = 23,779.90

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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.