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Finding the Fourth Proportional to 31,379.31, 43,303.76 and 17,232.46

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Solution

The fourth proportional to 31,379.31, 43,303.76 and 17,232.46 is: 23,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.31 : 43,303.76 = 17,232.46 : x
  2. Step 2: Convert to fraction form
    31,379.31/43,303.76 = 17,232.46/x
  3. Step 3: Cross multiply
    31,379.31x = 43,303.76 × 17,232.46
  4. Step 4: Simplify right side
    31,379.31x = 746,230,312.05
  5. Step 5: Solve for x
    x = 746,230,312.05/31,379.31
  6. Step 6: Final answer
    x = 23,780.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.