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Finding the Fourth Proportional to 18,493.97, 25,515.45 and 10,530.54

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Solution

The fourth proportional to 18,493.97, 25,515.45 and 10,530.54 is: 14,528.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.97 : 25,515.45 = 10,530.54 : x
  2. Step 2: Convert to fraction form
    18,493.97/25,515.45 = 10,530.54/x
  3. Step 3: Cross multiply
    18,493.97x = 25,515.45 × 10,530.54
  4. Step 4: Simplify right side
    18,493.97x = 268,691,466.84
  5. Step 5: Solve for x
    x = 268,691,466.84/18,493.97
  6. Step 6: Final answer
    x = 14,528.60

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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.