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Finding the Fourth Proportional to 18,374.54, 25,350.62 and 12,707.18

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Solution

The fourth proportional to 18,374.54, 25,350.62 and 12,707.18 is: 17,531.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.54 : 25,350.62 = 12,707.18 : x
  2. Step 2: Convert to fraction form
    18,374.54/25,350.62 = 12,707.18/x
  3. Step 3: Cross multiply
    18,374.54x = 25,350.62 × 12,707.18
  4. Step 4: Simplify right side
    18,374.54x = 322,134,891.45
  5. Step 5: Solve for x
    x = 322,134,891.45/18,374.54
  6. Step 6: Final answer
    x = 17,531.59

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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.