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Finding the Fourth Proportional to 31,166.84, 43,010.19 and 18,424.61

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Solution

The fourth proportional to 31,166.84, 43,010.19 and 18,424.61 is: 25,425.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,166.84 : 43,010.19 = 18,424.61 : x
  2. Step 2: Convert to fraction form
    31,166.84/43,010.19 = 18,424.61/x
  3. Step 3: Cross multiply
    31,166.84x = 43,010.19 × 18,424.61
  4. Step 4: Simplify right side
    31,166.84x = 792,445,761.72
  5. Step 5: Solve for x
    x = 792,445,761.72/31,166.84
  6. Step 6: Final answer
    x = 25,425.93

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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.