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Finding the Fourth Proportional to 18,599.12, 25,674.64 and 12,557.55

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Solution

The fourth proportional to 18,599.12, 25,674.64 and 12,557.55 is: 17,334.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,599.12 : 25,674.64 = 12,557.55 : x
  2. Step 2: Convert to fraction form
    18,599.12/25,674.64 = 12,557.55/x
  3. Step 3: Cross multiply
    18,599.12x = 25,674.64 × 12,557.55
  4. Step 4: Simplify right side
    18,599.12x = 322,410,531.32
  5. Step 5: Solve for x
    x = 322,410,531.32/18,599.12
  6. Step 6: Final answer
    x = 17,334.72

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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.