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Finding the Fourth Proportional to 13,474.80, 20,208.60 and 4,114.80

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Solution

The fourth proportional to 13,474.80, 20,208.60 and 4,114.80 is: 6,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,474.80 : 20,208.60 = 4,114.80 : x
  2. Step 2: Convert to fraction form
    13,474.80/20,208.60 = 4,114.80/x
  3. Step 3: Cross multiply
    13,474.80x = 20,208.60 × 4,114.80
  4. Step 4: Simplify right side
    13,474.80x = 83,154,347.28
  5. Step 5: Solve for x
    x = 83,154,347.28/13,474.80
  6. Step 6: Final answer
    x = 6,171.10

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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.