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Finding the Fourth Proportional to 18,517.88, 25,557.12 and 10,453.16

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Solution

The fourth proportional to 18,517.88, 25,557.12 and 10,453.16 is: 14,426.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.88 : 25,557.12 = 10,453.16 : x
  2. Step 2: Convert to fraction form
    18,517.88/25,557.12 = 10,453.16/x
  3. Step 3: Cross multiply
    18,517.88x = 25,557.12 × 10,453.16
  4. Step 4: Simplify right side
    18,517.88x = 267,152,664.50
  5. Step 5: Solve for x
    x = 267,152,664.50/18,517.88
  6. Step 6: Final answer
    x = 14,426.74

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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.