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Finding the Fourth Proportional to 12,483.54, 18,728.10 and 4,692.42

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Solution

The fourth proportional to 12,483.54, 18,728.10 and 4,692.42 is: 7,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.54 : 18,728.10 = 4,692.42 : x
  2. Step 2: Convert to fraction form
    12,483.54/18,728.10 = 4,692.42/x
  3. Step 3: Cross multiply
    12,483.54x = 18,728.10 × 4,692.42
  4. Step 4: Simplify right side
    12,483.54x = 87,880,111.00
  5. Step 5: Solve for x
    x = 87,880,111.00/12,483.54
  6. Step 6: Final answer
    x = 7,039.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.